Page 12 of catalogue Linear bearings of PM Bearings B.V.

Recommended Stroke Length "H" The cage length is related to the load capacity of the linear bearing. PM recommends a stroke length (H) of 70% of the (longest) guideway length (A). In cases where the guideway length is longer than 400 mm the stroke length can be increased to maximum of 100%. H/A ≤ 0.7 (for H ≤ 400 mm) H/A ≤ 1 (for H > 400 mm)

Wipers and Seals Whenever Linear bearings are installed under unfavourable ambient conditions, it is advisable to protect them from the ingress of dust and dirt. For anti-friction guideways type RSD, RSDE, DST, N+O special endstops with felt-wipers can be supplied, optional to order. For other sealing arrangements, or wipers, please enquire PM - BEARINGS.

Maximum Velocity and Acceleration RSD type series linear bearings: Max. recommended speed v= 50 m/min. Max. acceleration a= 8 m/sec2. RSDE type linear bearings: Max. recommended speed V= 50 m/min Max. acceleration a= 25m/sec2 RSDE with ACC-solution: Max. recommended speed V=50 m/min Max. acceleration a=150 m/sec2 (15G) N+O type linear bearings: Max. recommended speed v= 50 m/min. Max. acceleration a= 150 m/sec2. (depending on type of bearing-cage used) To attain maximum acceleration and speed without skidding of balls or rollers (which can result in cage creeping) the bearings must be suitable pre-loaded (for details please enquire).

11