Welker Exhibiting at Fabtech 2017
October 31, 2017
Welker will be in Chicago for this year's Fabtech Expo, November 6-9. The expo is North America's largest metal forming, fabricating, welding and finishing event. New this year is the RMP Retracting Micro Pin. Displays featured operating shot pins, lockouts, clamps, part positioner, expanding locating pins, part presentation slide, and more. Smaller components will be available for hands-on demo.
Welker will be in booth B37031, located in the welding area of Hall B, McCormick Place. Sales engineers will be on hand to help visitors learn how to make their welding and assembly processes more efficient and cost effective.
New Product Release: GB2 Ground Block
August 10, 2017
Welker ground block cylinders offer a cost advantage over machined backups and spring ground blocks for MIG & arc welding applications. Weld consistency is improved by producing a consistent ground even after significant electrode wear. The GB2 is electrically insulated and pneumatically actuated, available in 25 and 50mm retract stroke lengths to allow easy part removal or transfer. Part contact pressure can be adjusted with an inline NPT regulator, producing contact forces as low as 45 lbf. Ideal for thin materials or space constrained grounding applications. Weld field immune cylinder switch is adjustable to sense extend and retract. The GB2 features a lube-free design, double seals, and bi-directional mounting. Class 2 copper adapter is offered with choice of smooth, knurled, or projection swivel head.
Click here for more info
New Product Release: Retracting Micro Pin
June 16, 2017
Welker RMP Micro Pins are ideal for small, lightweight parts with minimal side load. 2-way pin retracts fully into backup. Unit can be used without backup or backup can be machined away for clearance. The RMP features an integrated pneumatic cylinder with rap coupler and versatile multi-sided NAAMS mounting. Hard anodized aluminum construction, weld spatter resistant coating. Easy change-out pins available in 3-12mm diameter. Includes weld-field immune solid state switch.
Click here for more info
New Training Room
Jan 18, 2017
Our new training room is ready for guests! As part of the 2016 site expansion, the 1200 square foot area was designed to host training and special events. The Lunch & Learn sessions provide customers an opportunity to enjoy a light lunch during an interactive presentation that is tailored to their key interests. Most components are on hand for demonstration and application discussion.
Welker exhibiting at Fabtech 2016
Sept 27, 2016
Welker will be in Las Vegas for this year's Fabtech Expo, November 16-18. The expo is North America's largest metal forming, fabricating, welding and finishing event. New this year are the PCY compact pin clamp and LP Series slides. Displays will feature operating shot pins, lockouts, clamps, part positioner/ejector, expanding locating pins, part presentation slide, and more. Smaller components will be available for hands-on demo.
Welker will be in booth N1731, located in the welding area of North Hall, Las Vegas Convention Center. Sales engineers will be on hand to help visitors learn how to make their welding and assembly processes more efficient and cost effective.
New Product Release: PCY Pin Clamp
August 23, 2016
Welker introduces the second in its new series of compact pin clamps. The PCY accommodates pin diameters 16.01 to 26.00mm. Dual fingers clamp on both sides of hole or part, unlike single hook designs. The PCY provides positive part location and clamping, up to 14mm part thickness. Ideal for flanged holes, end effector applications, and material handling. Retract option allows low profile pin to retract below the backup for easy part release. Spring retract feature holds parts on end effectors if air loss occurs.
Click here for more info
New Weld Field Immune Switch L3
April 20, 2016
Welker introduces a new solid state cylinder mounted sensor. Comparable to World Switch in function and performance, the L3 is immune to the majority of direct and alternating field welding applications. The switch features weld spray resistant cable covers and M12 DC connector. The new L3 switch is available on products that include Welker T-slot and tie rod pneumatic cylinders.Click here for more info
April 4, 2016
Welker is pleased to announce a 34,000 square foot expansion of its Troy facility. The substantial growth of product offerings and manufacturing capacity has led to a need for additional space. Assembly & test area will enlarge to accommodate production of the new part presentation slides and tool tray shuttles.
New Product Release: LP Series Slides
Feb 1, 2016
Welker introduces a new series of extremely compact rail slides. Offered in strokes up to 495mm, units feature aluminum carriage & base plate. Fixed metal shroud protects rails from contaminants. Low profile design provides up to 500 lbf load capacity. LP Series slides use Welker Smart Stop for sensing and stopping. Ideal for model select or single weld gun application.Click here for more info
Welker exhibiting at Fabtech 2015
Oct 1, 2015
Welker will be showcasing a variety of innovative automation components at this year's Fabtech Expo in Chicago. Sales engineers will be on hand to help visitors learn how to make their welding and assembly processes more efficient and cost effective. The expo is North America's largest metal forming, fabricating, welding and finishing event. Over 40,000 attendees are anticipated in the 550,000 square foot facility. Welker will be in booth #N28054, located in the welding area of the North Hall, McCormick Place. Fabtech runs November 9-12.
Welker hires Wendell Browning as Sales Engineer
July 16, 2015
Welker is pleased to welcome sales engineer Wendell Browning to the team. A former account manager at DE-STA-CO, he brings more than 20 years of mechanical product experience in the automotive and aerospace industries.
Wendell lives in the Metro Detroit area with his wife, Jada. Their son Jeremy lives in New York and daughter Kyla is moving to Houston, having just completed college. Outside the office Wendell enjoys traveling, working out, and meeting with the men's group of his church.
New Product Release: PCZ Pin Clamp
June 11, 2015
Welker introduces a revolutionary new line of compact pin clamps. Lightweight unit weighs just 3.4 lbs. including integrated pneumatic cylinder. The PCZ provides positive part location and clamping, up to 4mm part thickness. Gapless dual fingers clamp on both sides of hole or part, unlike single hook designs. Ideal for flanged holes, end effector applications, and material handling. Locating pins are available in bullet nose or low profile styles, diameters 8.00 to 16.00mm. Retract option allows low profile pin to disappear into unit, below backup, for easy part release.Click here for more info
New Product Release: Roll Dimpler
April 20, 2015
The Welker Roll Dimpler minimizes blank sticking by adding rows of small dimples to sheet metal in coil fed operations. The compact design mounts between the decoiler/straightener and press. Dimples prevent blanks from sticking together simplifying handling for operators and press feed robots. Minimizing double-sheet misfeeds prevents die damage and downtime. Eliminates the need for expensive air knife systems. The roll dimpler can be used with any coil fed material.Click here for more info
New Product Release: Bull Pin
March 17, 2015
The Welker Bull Pin is a new heavy duty retracting locating pin. Its 2kg slide hammer rap piston delivers concentrated pulling power in frame line applications. A high-load PTFE composite bearing provides superior lube-free working load capacity. Chrome plated shaft is always fully engaged, offering long precision life. Easily accessible anti-rotate pin mount allows mounting of 2-way pins and crowder pads.Click here for more info
New Product Release: Tool Tray Shuttles
Feb 24, 2015
Welker announces the addition of tool tray shuttles to its robust and durable line of automation components. The shuttles utilize electric actuators and absolute encoders for high repeatability. Experts in weld tooling, Welker offers a quick turnaround for custom engineered designs. Carriage plates are machined to customer hole patterns and feature precision homing/lockout pins. A hard-plumbed manifold is available for easy access lubrication.Click here for more info and videos.
Production Capacity Improvement
Dec 9, 2014
Welker welcomes the new year with a new machine and increased production capability! The Kitamura HX500G boasts having the world's fastest rapid feed rates, 2362ipm on solid box ways. Twin ballscrew design offers excellent position accuracy and repeatability, allowing 34.3" X and 31.5" Y travel, with 36.6" Z travel. Its energy efficient geared spindle design is a cost saving bonus.
Welker exhibiting at Fabtech 2014
Oct 14, 2014
Welker will be showcasing a variety of innovative automation components at Fabtech Expo, November 11-13 in Atlanta, Georgia. The expo is North America's largest metal forming, fabricating, welding and finishing event. Over 27,000 attendees are anticipated in the 500,000+ square foot facility. Welker will be in booth #C2135, located in the center of the welding area of Hall C, Georgia World Congress Center.
Welker's booth display will feature operating pneumatic components such as shot pins, part positioner & ejector, floating and expanding locating pins, pin clamp, powered slide, and more. New products include the Part Presentation Slide, Rota-Flex rotary indexer, and Wire Clamp. Sales engineers will be on hand to help visitors learn how to make their welding and assembly processes more efficient and cost effective.
New Product Release: Aluminum UB2 Shot Pin
Sept 4, 2014
Welker introduces an aluminum version of its popular UB2 shot pin. Compact and lightweight, the 25mm stroke unit is just 4.5 lbs. Integrated anti-rotate ram is precision machined of high strength aluminum and hardcoated for added durability. Unit includes a lube-free pneumatic cylinder with multiple port positions for easy plumbing and installation. A solid state cylinder switch is included in the standard unit price. Safety orange steel shroud protects seal from weld spray. Available in 25, 50 and 75mm stroke lengths, the UB2 is ideal for use as a retractable locating pin or straight acting clamp in applications where space is limited. The UB2 is the lightest weight full feature shot pin available.Click here for more info.
New Product Release: Pneumatic Wire Clamp
Aug 4, 2014
Featuring an over-center toggle locking design, the Welker Wire Clamp is available for wire diameters 4.0 thru 10.0mm. When actuated, the spring detent mechanism retains wire in place. Part contact surfaces have been hard coated for weld spatter resistance and long life. A lightweight aluminum body provides multiple NAAMS standard mounting surfaces. This compact wire clamp is ideal for seating applications, instrument panel assembly, appliance and exhaust systems manufacturing.Click here for more info and video.
Application Spotlight: DB4 adds lift to Part Ejector
July 21, 2014
The versatile DB4 dual guided slide can be used as a lifter in ejector applications where additional linear stroke is needed, up to 150mm. The unit's double square ram provides super high rigidity and is suitable for mounting it in any orientation. Lightweight and durable steel & aluminum construction with a full length high performance reinforced PTFE square bearing. No lubrication is required and maintenance is minimal. Available with Welker Smart Stop for sensing and shimming both ends of stroke.Click here for more info.
Welker hires Scot Bigelow as Sales Engineer
June 24, 2014
Welker is pleased to welcome Scot Bigelow to the Sales Team, covering southeast and west Michigan. He brings more than 25 years of tooling design and project management experience in the automotive and aerospace industries. A former program manager at Kuka Systems and Comau/Pico, Bigelow has a working knowledge of Welker components in automation systems and manufacturing applications.
Scot lives in the Metro Detroit area with his wife Jennifer and their children Shelby, Cameron and Courtney. In his spare time he enjoys drag racing his '74 Dodge Dart Sport in the southeastern Michigan circuit.
Welker names Dan Kneller and Tim Thomas as Chief Officers
April 3, 2014
Welker Engineered Products is pleased to announce the promotion of two key executives. Dan Kneller has been appointed Vice President and Chief Revenue Officer. Tim Thomas has been appointed Vice President and Chief Operating Officer. The announcement was made by Dale Van Wulfen, President and CEO of Welker.
Kneller brings knowledge and experience to the position of Chief Revenue Officer, with over 35 years sales experience and management at Welker, a BS from Iowa State University and an MBA from Eastern Michigan University. He will be responsible for implementing Welker's strategic plan for growth and market diversification.
As Chief Operating Officer, Thomas will assure that Welker meets or exceeds customer expectations, from design to order processing to manufacture and shipment. A multiple-patent holder with a proven 25-year track record for successful application-focused solutions, he will continue to oversee product development. Thomas has a BS in chemical engineering from Michigan State University.
Together, Kneller and Thomas have been instrumental in driving Welker forward to become a leading manufacturer of automation components. They will continue to expand Welker's product offerings by remaining at the forefront of customer relationships, keeping pace with automation technology.
New Product Release: PCT Pin Clamp
March 6, 2014
The PCT is a compact version of the standard Welker pin clamp for small part location and clamping. Gapless dual-finger design provides linear non-toggle clamp action, clamping multiple parts within a 7mm range. Available with 12-16mm diameter pins for 2-way or 4-way locating, bullet or low profile nose styles. The pin is self-contained in a cartridge that is easily replaceable in the field. Steel and aluminum bronze backups are offered in various sizes. The PCT is ideal for robot end effector welding applications.Click here for more info.
New Product Release: Rota-Flex Rotary Indexer for Passive Flexible Tooling
Feb 14, 2014
The Welker Rota-Flex is a positive lock mechanical indexer for trunnion fixtures, model change-over tooling, and small dial tables. It provides low cost, secure, repeatable positioning in 30-degree increments. Ideal for palletized systems, the Rota-Flex does not require power, additional controls or sensing, and is suited for horizontal or vertical applications. The spring loaded self-locking mechanism can be passively actuated by robot, manual tool or pneumatic foot pedal/hand button. The Welker Rota-Flex can run multiple models on geo pallet assembly lines, saving on pallet cost and storage while improving production throughput.Click here for more info.
New Product Release: Part Presentation Slides
Feb 6, 2014
The new Welker Part Presentation Slide offers a cost and space saving alternative to feed conveyors. Utilizing electric actuators, they deliver a 90% reduction in energy usage compared to long stroke pneumatic slides. Constructed of heavy duty aluminum extrusion, slides are suitable for harsh environments. A single motor unit can drive one or two slides. Dual slide units allow push/pull bin presentation, which buries load time in the cycle. Slides can be outfitted with trays for standard part bins or floor mounted to pull dunnage carts. Presentation slides can also be used vertically, loading from the mezzanine is the ultimate floor space saver. Providing no pinch points or catch points, the part presentation slide is safer for the operator than indexing or accumulating conveyors.
Applications: nested part presentation; end effector storage/retrieval; weld or clinching guns; model select; tip dresser shuttle; and overhead shuttle when used with the DB4 lifter.
New Product Release: Tube Clamps
Jan 17, 2014
Available in three sizes, Welker tube clamps provide a narrow back-up and clamp for holding pipe and tubing. When actuated, dual hardened fingers center and securely grip tube against v-block. An interchangeable spacer beneath the v-block allows multiple diameter tubes to be used in the same fixture, within the clamp size range. Unit includes a compact cylinder with multiple port positions for easy plumbing and installation; optional solid state cylinder switch is available. Ideal for exhaust system assembly, seating applications and furniture manufacturing.Click here for more info.
New Product Release: Mini Part Ejector MPE
Dec 13, 2013
Offering the proven quality and durability of standard ejectors, Welker introduces a mini part ejector for smaller applications. The MPE's cam actuated motion lifts tip plate up 30mm and tips out 30°. The steel tip plate is treated to withstand harsh environments and provides a NAAMS standard hole pattern to mount tooling. The unit is capable of handling loads up to 90 lbs. with a maximum torque of 100 in-lbf. Its compact design features an integrated pneumatic cylinder with standard NPT or G ports; optional solid state cylinder switch. The MPE is ideal for part reject escapement in manufacturing lines.Click here for more info.
Welker exhibiting at Fabtech 2013
Nov 1, 2013
Welker will be showcasing a variety of innovative automation components at Fabtech Expo, November 18-21 in Chicago. The expo is North America's largest metal forming, fabricating, welding and finishing event. Over 35,000 attendees are anticipated in the 550,000 square foot facility. Welker will be in booth #N2871, located in the welding area of the North Hall, McCormick Place.
Welker's booth display will feature operating pneumatic components such as shot pins, dual-action part positioner, floating and expanding locating pins, pin clamp, powered slide, and more. A servo-actuated shim positioner will be representing Welker's electric product offerings. The new auto-indexing dimpler will be table top for demonstration. Sales engineers will be on hand to help visitors learn how to make their welding and assembly processes more efficient and cost effective.
Product Spotlight: UB Series Shot Pins
Oct 15, 2013
For over two decades Welker has been the leader in producing lubrication-free shot pins for diverse markets and industries. Today, Welker has over 1,000,000 units in production around the globe. The UB series shot pins are by far the most popular for their simple integrated design, accuracy and repeatability. They also provide the lowest cost of ownership and operation.
The UB series includes the UB2, with 24mm square ram, and the 40mm square ram UB4. They are available in 25, 50, and 75mm stroke lengths, with standard NAAMS compatible base mounting pattern. Anti-rotate ram enables the shot pins to handle offset loads, carrying multiple locators and backups. A variety hole patterns are offered for mounting tool. Ram is electrically insulated from the body and resistant to corrosion and weld spatter. Units are equipped with safety orange steel shrouds to withstand harsh environments.
Applications for the UB shot pins include retractable locating pin, straight acting clamp, part stop, probe slide and wedge lock.Click here for more info.
New Product Release: BP2 Lockout Pin
Sept 23, 2013
The BP2 Lockout Pin is a compact motion security solution that features a pneumatic retractable pin. With optional spring extend, an air loss mechanically triggers pin extension. Promotes safe machine operation and maintenance. 2500 lbf lockout load capacity. Available in 25 and 50mm strokes with optional cylinder switch. Choice of receivers allows for positioning or safety lockout applications. Use with turntables, trunnion fixtures, dunnage carriers, indexers, and C-frame presses. Low maintenance operation!Click here for more info.
New Product Release: Auto-Indexing Dimpler
Aug 26, 2013
The Welker Auto-Indexing Dimpler protects dies by minimizing potential for multiple blank feeds in stamping operations. It prevents sheet metal blanks from sticking together by producing a pattern of small dimples in the trim edge that automatically index with the action of the press. Suitable for aluminum, or cold/hot-rolled steels, the unit requires no air, hydraulic or electrical connections. The Dimpler can also improve plant safety by correcting the fan-stack effect on tailor-welded blanks.Click here for more info.
Production Capacity Improvements Continue at Welker
July 31, 2013
The second machinery upgrade within a year, Welker welcomed the arrival of a new ENSHU horizontal machining center. The GE480H offers automatic pallet and tool changers, rapid feedrate, and high speed endmill and facemill processing. Its 15,000 RPM spindle has a 31.5" travel on X, Y and Z axes. This high performance machine will certainly increase throughput at Welker!
Product Spotlight: Welker Servo Lifters & Slides
July 16, 2013
Welker introduces a new line of electrically actuated slides and lifters that deliver accurate repeatability and huge cost savings. The efficiency of electric systems deliver up to a 90% cost savings over air driven components. Electric actuators eliminate the need for air lines, valves, switches, hoses, air filter/regulators, compressors, and maintenance costs associated with pneumatic systems. The initial investment of electric components is typically recaptured within the first year of operation.
Robust and durable, Welker’s electric slides and lifters utilize servo actuators to drive and position the unit’s load. This enables precise multi-positioning, ideal for multiple models running in the same assembly line or weld gun applications. Synchronized motion can be achieved by locating lifters at opposite ends of an application, allowing full access to the part. Servo actuators are also offered on single and double axis shim positioners, where quick repositioning of components for model change is needed.
Welker continues to expand its innovative product offerings with the introduction of servo actuated slides and lifters, keeping pace with manufacturing trends toward energy efficient, sustainable, and cleaner technologies.Click here for more info.
New Product Release: UB2 Compact Shot Pin
July 1, 2013
Welker Shot Pins have become an industry standard, used in over one million successful applications. The new UB2 is the smallest, shortest square ram offering in the Gold Line series. Available in 25, 50, and 75mm stroke lengths, the UB2 is ideal for use as a retractable locating pin or straight acting clamp in applications where space is limited.
Anti-rotate ram is electrically insulated from body and resistant to corrosion and weld spatter. Multiple NAAMS compatible hole patterns options are offered. Durable steel & aluminum construction, requires no lubrication and minimal maintenance. Safety orange steel shroud protects seal from weld spray. The UB2 is the lowest cost, lightest weight full feature shot pin available.Click here to see more Welker Shot Pins.
Product Spotlight: Welker Part Positioner
Apr 15, 2013
The new part positioner is based on the widely used part ejector component with eight years of successful field time in welding fixtures. The cam operated motion of the part ejector is used in reverse and terminates in to a V-block for repeatable positioning. The LST and SST part positioners are used vertically to preload, position and clamp parts from above. They can be used horizontally to deal with tricky down turned flange stampings.
Traditionally, a slide and a clamping device were used to present, position, or pin fixtured parts from above. After cycle, the slide would move the pinning and clamping components to a clearance position to remove the part.
The part positioner provides a part load opportunity in the clearance position and LINEAR approach to the fixtured part. After cycle, it provides a LINEAR motion and a pivoting dump to the clearance position. This is accomplished in a very compact space using half the valves and switches. Using Welker part positioners can increase robot access and reduce tool size and controls logic complexity.
With a standard price tag under $2000, the part positioner can provide substantial savings over traditional overhead locating and clamping constructions.
View from the Corner Office
Jan 15, 2013
What lies ahead?
Looking back I am proud to say Welker enjoyed a prosperous 2012. As we now begin to look forward to the upcoming year we need to pause and consider what new obstacles will 2013 bring. One of Welker's challenges will be to implement new forms of technology that will increase efficiency and keep costs low while at the same time remain an industry leader in quality, innovation and reliability. We believe that by investing in our employees and providing them with new skills and tools we will be be able to achieve our goal and continue to provide our customers value.
On a personal note, we say goodbye to Jo Ann Terri, who over her 35 year tenure helped to build this company. Over the years Jo Ann implemented our: Quality Assurance system, developed our website, oversaw our manufacturing operating system, put into place our HR policies just to name a few of her accomplishments. Overall she was a good friend to us all and will miss her. We wish her Godspeed, that is, good health and blessing in the years to come.
We expect 2013 to usher in new challenges and new opportunities. Those who embrace that scenario will find America to still be a wonderful place to live, work, and enjoy our great blessings. Count the Welker team among them.
Dale Van Wulfen, President
Product Spotlight: Welker's Mini Pin
Jan 15, 2013
Welker Mini Pins are the perfect fit for compact spaces and applications with limited accessibility. Welker offers both an in-line unit as well as an offset unit for maximum design flexibility. Both have standard integral net surfaces.
Welker can provide 2-way or 4-way locating pins up to 25mm diameter for in-line units and up to 19mm for offset units. Pin blanks are available to allow customers to finish the gage diameter as needed. Welker Mini Pins incorporate an anti-rotate feature and offer rap or rigid couplers. Mini Pin position can be sensed utilizing Welker's standard magnetic switch packages or using a customer supplied switch and a double rod cylinder.
Contact Welker for additional application assistance with our Mini Pins. Check out our product videos by clicking here.
Celebrating 40 Years!
Oct 15, 2012
On September 1st, Welker celebrated forty years under current ownership. Here's a short message from Welker's President Dale Van Wulfen.
Looking back…the years go by quickly...
Forty years ago the Welker Machinery & Bearing Co. no longer sold machinery, existing as a six person Oilite distributor in a 3500 sq. ft. warehouse adjoining the Welker family's primary business. Our Van Wulfen family business installed plating equipment, but that industry was changing. And so we bought Welker, preserving the company name.
In the first year we dropped a fastener line, to focus on plane bearings. We added the Rulon line of PTFE products. Within a few years we bought our first CNC lathe (at a cost more than double what I paid for my home) to turn cast bronze bearings from continuous cast bars. The tolerances and concentricity far surpassed the sand cast product we replaced. Over time Welker developed gibs, PTFE lined bearings, and various other plane bearing products. CIP bearings are made from material produced by a sister company we formed in Oregon. Aside from Welker's industrial applications, that product has marine and hydroelectric approvals and uses.
Today Welker has six CNC lathes, seven horizontal and five vertical mills generating the components of our broad array of automation products. Our Engineering Department has a well-deserved reputation for innovation, solving complex challenges without Rube Goldberg devices. As president, I am proud of the team we have built at Welker. We are committed to making our customers more productive, with improved quality. For only when you succeed can Welker benefit from our relationship. Thank you for your continued support.
Dale Van Wulfen
Product Spotlight: New Expanding Pin
Oct 15, 2012
When presented with an application challenge from a major Midwest agricultural manufacturer, Welker went right to work to create a solution. The problem: how to accurately and repeatably locate critical parts using gage holes having a +/- 0.25mm tolerance.
The solution: Welker's new expanding pin. The Welker expanding pin has 2 - 4 fingers that expand to center and locate loosely toleranced holes or tubes. The fingers expand between 1 to 3mm depending upon diameter. This enables ease of loading and unloading while providing the desired accuracy for geometry setting of welded assemblies.
Contact Welker for additional application assistance with our Expanding Pins. Click here for more info and product video
Columbia Industrial Products
Oct 15, 2012
Columbia Industrial Products, a sister company of Welker Engineered Products established in 1998, is located in Eugene, OR. Columbia manufactures high quality, self-lubricated laminate composite bearing materials for a wide range of industrial applications. CIP materials have achieved highly valued approvals for use in Hydroelectric (U.S. Army Corps of Engineers), Marine (American Bureau of Shipping), as well as the Oil & Gas industry. CIP Composites have exceptional physical and mechanical properties as well as dimensional stability in liquid. Ideal for high load and shock load applications, CIP offers an environmentally friendly solution that reduces or eliminates the need for subsequent grease lubrication. Contact Welker for more information.