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• metal-less design

• synergistic conductivity

Conductive grease
Electrostatic discharge from motor shafts or other nearby sources is known to reduce the life of shaft-support bearings from years to a matter of months. Conductive bearing greases help reduce or prevent such damage, but the metals and other conductive materials used in traditional greases are not lubricious and the conductivity is often short-lived because of particle matrix break-down. A white-paper entitled Capturing the Synergistic Effect of Additives to Formulate a Long-Life Electrically Conductive Bearing Grease describes an alternative approach to grease design. Nyogel 758G starts as a lubricious bearing grease with a blend of ester oils (which have an affinity to metals) and lithium soap for channeling properties. Instead of relying on metal, carbon or organic conductive additives, a proprietary combination of standard lubricant additives fortifies the oil to protect it from oxidation while synergistically creating an electron pathway through the grease. Nye Lubricants Inc, Fairhaven, MA. www.rsleads.com/304df-177

Bearing grease
Designed for high-speed machine tool spindle bearings, G-75 grease combines a synthetic base oil with a polyurea thickener instead of barium complex soap thickener, resulting in exceptional viscosity/temperature behavior characteristics, extreme thermal stability, low oil bleed rate and high load capacity. It operates at 1.5 M dN continuously. The Barden Corp, Danbury, CT. www.rsleads.com/304df-178

Contact bearing
This company’s new contact bearing uses a zero clearance design to increase precision and tracking. Maintaining contact with the shaft and various temperatures, the bearing provides shaft self-alignment and absorbs resonance vibration. Linear motion is made possible by its self-aligning capabilities. Each is made of an internal lubricated thermopolymer for economical durability. Applied Bearing Products, Lewiston, NY. www.rsleads.com/304df-179

Bearing lubricant retainer
QuickSilver composite metal-polymer retainer improves performance and operational life in applications that require maintenance free reliability in extreme environments. Combining the solid film lubricating properties of silver with the strength and durability of a polymer retainer, this product withstands autoclaving and operation at ultra high speeds. New Hampshire Ball Bearings Inc, Peterborough, NH. www.rsleads.com/304df-180

Precision bearings
Designed for ball screw applications requiring maximum axial rigidity, low drag torque and extreme control of lateral eccentricity, Fafnir MMN/MMF series double-row bearings feature integral, low-torque contact seals to exclude contaminants. The double-row configuration supports axial loads in both directions as well as combination radial loads and over-turning moments. The Torrington Co, Plymouth, MI. www.rsleads.com/304df-181

Thin-film lubricant
Ultra-Film thin-film lubricant is tackless and odorless and withstands loads up to 400,000 psi and temperatures up to 600°F. Containing no moly, solids nor zinc, it deposits only a clean, semi-dry film that does not attract airborne pollutants and particulate, thereby eliminating deposit buildup, sludge and caking. Thermally stable, the film has excellent adhesion, unlike comparable thin-film lubricants. Digilube Systems Inc, Springboro, OH. www.rsleads.com/304df-182

Linear bearings, bushings & support blocks
Catalog B612 describes the Super Smart Ball Bushing & Pillow Blocks, Precision Steel Bushings and 60 Case LinearRace support blocks. Technical data with load/life plus graphs and dynamic load capacities are included. The catalog is available online in pdf form along with complete product specs and interactive quote form. Quality Bearings & Components, Garden City Park, NY. www.rsleads.com/304df-183

Snap-in polymer bearings
Type 7 snap-in Nylon engineered polymer bearings are designed for easy installation in thin plates, with a double-flange construction to assure positive bearing retention. Available in both mm and in. sizes, the bearings feature a minimum dia. shaft-to-bearing clearance of 0.001-in., thin wall construction for minimal thickness changes and lubrication-free operation. Thomson Industries Inc, Port Washington, NY. www.rsleads.com/304df-184

Polymer bushings
Ketron PEEK bushings have replaced PTFE bushings to quadruple bearing life. The new bushings are non-galling and non-seizing in contact with metal, and can withstand 180°C operating temperatures. The low-thermal expansion material can be machined to tight tolerances, and the low-friction, wear-resistant material permits close running tolerances to eliminate corrosion, galling and wear problems. Quadrant Engineering Plastic Products, Reading, PA. www.rsleads.com/304df-185

PTFE wear strips, guides
Available in a range of configurations, a full line of custom and extruded PTFE wear strips and conveyor guides resists temperatures of –350° to 500°F and are chemically inert. Sizes range up to 1¼-in. wide, in standard 5- and 10-ft lengths. They can be formulated with various percentages of glass to enhance wear properties. Slideways Inc, Shrewsbury, MA. www.rsleads.com/304df-186

Hybrid ceramic bearings
Offered as an alternative to steel bearings, these hybrid ceramic ball bearings prevent electrical arcing, resist wear, operate at higher speeds and lower operating temperatures, while promoting extended service life. The light, hard silicon nitride balls are more durable than their steel counterparts. A wide range of bearing types is available with CAD drawings downloadable from the website. MRC Bearing Services, Kulpsville, PA. www.rsleads.com/304df-187

Tapered roller bearings
Featuring a logarithmic raceway profile that allows more uniform load carrying capabilities, these tapered roller bearings have optimized the roller flange contact and improved flange and roller end surfaces. Case-hardened inner and outer rings withstand shock loads and increase performance reliability. They are designed for demanding applications within the transportation industry. RBC Bearings, Fairfield, CT. www.rsleads.com/304df-188

Roller bearings catalog
This catalog describes the company’s lines of self-aligning roller bearings, including pillow blocks, flange blocks, flange cartridge blocks, cartridge blocks and duplex units, as well as take-up blocks and take-ups. Products feature a 15 to 40% load capacity increase, 59 to 260% longer life, 32 to 75% speed limit increase, 15 dB lower sound level and 15°F cooler operation, depending on load and speed. Rexnord Bearing Group, Indianapolis, IN. www.rsleads.com/304df-189

Adapter ball bearing
With its fully concentric 360-degree inner ring, pull/push adapter system and completely interchangeable housing design, the Dodge Grip Tight Adapter ball bearing provides damage-free shafting, reduced vibration and lower cost. The press-fit adapter eliminates fretting corrosion. It is offered in normal and medium duty with 17- to 70-mm and ½- to 37/16-in. shaft dia., and various housing configurations. Rockwell Automation, Greenville, SC. www.rsleads.com/304df-190

Thrust washers
This company’s Teflon thrust washers matches the dimensions of the shaft collars to provide a bearing surface for high thrust, low speed applications, such as rotating components or pivoting robot arms. They are available in sizes ranging from ½-in. ID x 1 1/8 OD up to 2-in. ID x 3-in. OD. Teflon construction provides a chemically inert, non-flammable washer that operates over –450° to 500°F temperature range. Stafford Mfg Corp, Woburn, MA. www.rsleads.com/304df-191

Application Xtra  

Bearing rings
Designed to serve as practical, space-saving seals for ball and roller bearings, all-metal Nilos rings protect against a contamination by foreign matter, including tough abrasive particles. They are particularly suited to seal grease-lubricated anti-friction bearings used in high-contaminant industrial environments. The rings mount easily on ball bearings as well as straight and tapered roller bearings. SKF Motion Technologies, Bethlehem, PA. www.rsleads.com/304df-192

Removable linear bearing
The DryLin linear bearing combines an insertable gliding surface made from the company’s iglide J material, with an anodized aluminum adapter for maximum performance and accessibility. The stock bearing allows direct interchange with standard ball bearings. The design can be used in rotating and oscillating applications also. igus inc, East Providence, RI. www.rsleads.com/304df-193