BOSCH REXROTH R167129320 BOSCH REXROTH LINEAR GUIDEWAY CARRIAGE
- Weight (g): 1.326,00
Bosh Rexroth R167129320 Wide Ball Runner Blocks BNS, Size 25/70, C0 Without preload (clearance), Accuracy class H, SS Standard seal, Pre-lubricated Wide Ball Runner Block BNS, steel, without ball chain, R1671 2.
Area of application: For high torsional moments on rails
The same high load ratings in all four main directions of loading
Long-term lubrication is possible over several years
Excellent dynamic characteristics
Attachments on the Ball Runner Block can be mounted from above and below
Due to the Rexroth design with four rows of balls, 2-point contact is available in all loading directions. This reduces the friction to a minimum. Other ball rail systems with two or four rows of balls with 4-point contact have multiple friction: due to the differential slip with lateral loading and in case of comparable prestressing without the load, the gothic raceway profile causes higher friction (depending on the raceway curvature and the load, up to five times the friction coefficient). This high friction leads correspondingly to greater heat.
Seals are use to prevent dirt, chips and coolants, etc. from working their way into the inside of he Ball Runner Block, thereby preventing reductions to its service life.
Standard seal (SS)
Universal seals are fitted as standard in Rexroth Ball Runner Blocks. They have a uniform sealing effect for Ball Guide Rails with and without cover strips. Low friction and a good sealing effect have both been taken into account in the design. For applications where effective sealing is required.
Low-friction seal (LS)
For special requirements with regard to ease of movement.
Double-lip seal (DS)
For increased exposure to media
For applications in environments with fine dirt or metal particles, as well as coolants or cutting fluids. Interchangeable during servicing.
For applications in extreme environments with fine dirt or metal particles, as well as heavy use of coolants or cutting fluids. Interchangeable during servicing.
Cover plate wiper
For use in environments with coarse dirt or chips
C0 = Without preload (clearance)
C1 = Moderate preload
C2 = Average preload
C3 = High preload