- Max. speed: 8 m/s - Working temperature: -20°C to +60°C - Cap Seals will be supplied lubricated, further lubrication is not normally necessary unless a high duty cycle/speed is involved. In these cases lubrication with a NLGI grease (consistency No. 2 ) will suffice. Materials - Roller: steel ring and balls AISI52100 hardened, high traction resistance blackened steel axle, plastic cage. - Plate: black anodised high resistance aluminium alloy. - Plate and rail caps: plastic - Cap seal Body: Thermoplastic elastomer Inserts: Impact resistant plastic Wipers: Felt Frictional resistance - Frictional resistance use 0.02 x Load (N) + Seal Friction (N)