Plain Bearings Simplicity ®
0-Rings Used in standard pillow blocks and with self-aligning bearings. Nitrile Buna 70 (standard) – A good general purpose rubber that is used in 98% of applications (-65°F to 275°F (-54°C to 135°C)). Viton (special – designate with “V”) – Used only in high temperature applications up to 400°F (up to 204°C). Seals Use only in the most contaminated environments. Polymod ® (standard) – A high performance polymer modified material that reduces friction of a standard buna material by 50% and increases wear life. Polymod is a registered trademark of Polymod Technologies, Inc. Temperature : -20°F to +212°F Urethane (special - designate with “U”) – A moly-impregnated urethane scraper that is only for the severest applications - friction is greatly increased! Temperature : -40 to +200°F Viton ™ (special - designate with “V”) – A brand of synthetic rubber and fluoropolymer elastomer used only in high temperature applications. Temperature : Up to +400°F
Attention: 90% of applications do not require seals when using Simplicity bearings. The liner has a natural ability to wipe particles from the shafting. Any particulate (metal, sand, etc.) that does enter the bearing will embed itself into the soft liner not scoring the shafting or locking mechanical parts. When ordering a bearing with any internal features (seals or internal lubrication), the bearing may or may not be shipped with extra internal grooves in addition to those needed for the ordered option. Low volume orders are more likely to have additional grooves. The extra grooves will not negatively impact the performance of the bearing. Also, internal grooves are typically an anodized surface; however, in the interest of the quickest possible delivery, the internal grooves may not be anodized. Bearing Alignment Linear ball bearings will continue to operate in a misaligned condition, but can cause damage to the shafting and catastrophically fail. Simplicity bearings DO NOT tolerate misalignment. They simply stop moving without any damage to the shafting. Self-aligning housings aid in misalignment – up to 1/2° from centerline. Note: Please refer to the tables in the installation section for possible solutions to misalignment.
Lubrication System Order with “JKM” modifier
Lubrication system includes: Felt wick – Retains oil lubricants (remove when using grease lubrication). Wicks are glued in place on open bearings while they just sit in place on closed bearings. Zerk fitting – Installed into pillow block, other housing, or directly into die sets PAC, PACM. (Standard lube fitting with ¼-28 thread)
Misalignment Considerations–page 150
ZERK FITTING IN HOUSING
pbclinear.com • Engineering Your Linear Motion Solutions 15
Made with FlippingBook - professional solution for displaying marketing and sales documents online