W4 / RM4 Track Rollers categorized as double-row, double sealed / shielded, radial, deep groove ball bearings
W4 / RM4 Track Rollers are made of chrome steel or stainless steel
W4 / RM4 Track Rollers are closed with rubber seals(2RS) / metal shields(ZZ) to protect the bearing from dust or any possible contamination
W4 / RM4 Track Rollers are lubricated with grease.
Name: Track Rollers, Guide Rollers, Guide Way Bearings
Item: W4 / RM4-ZZ, W4X / RM4-2RS
Type: Double-shielded ZZ / Double-sealed 2RS
Size: 15 mm x 59.94 mm x 19.05 mm x 25.4 mm x 34.93 mm
Bore Diameter (d): 15 mm
Outer Diameter (D): 59.94 mm
Inner / Outer Width (B): 19.05 mm
Center Diameter (A1): 25.4 mm
Center Diameter (A2): 34.93 mm
Radial Play: C0 / C2 / C3
Rings Material: Chrome steel 100Cr6 or Stainless steel SUS 440C
Balls Material: Chrome steel 100Cr6 or Stainless SUS 440C
Cage Material: Nylon(PA66)
Seal Materil: NBR+SPCC
Seal Type: Non-contacted / Light Contacted / Heavy Contacted
Shield Material: SPCC
Lubrication / Grease: SHELL / MOBIL / KYODO / KLUBER / EXXON / HTHS
Bearing Brand: Neutral / OEM