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NSK Linear GuideTM Roller Guide Equipped with V1 Seal
NSK K1TM lubrication unit
Porous resin Containing a large amount
of lubricant oil
Enlarged view of NSK K1
Made of porous synthetic resin containing a V1 Seal
large amount of lubrication oil.
When moved through contact with the raceway Highly abrasion-resistant
surface, it supplies fresh lubricating oil. material used for seal lip
Rail cover (optional) Rail mounting hole caps Abrasion amount, mg
Lip made from New material Existing material
a new material
Protector Taper abrasion test (ASTMD1044)
Load: 9.8 N
Average speed: 29.7 m/min,
Approx. 40 km/day
The shape is partly changed.
Covers the top surface of the rail These caps prevent foreign matter V1 Seal made of new materials and in a new shape for better
and prevents foreign matter from from building up inside the rail abrasion resistance prevents foreign matter getting into the roller
entering in rail mounting bolt holes. mounting holes. slide for a long period.
■ Durability test under extreme conditions - no lubrication V1 Seal Conventional end seal
With this new material, even if lubrication is poor, damage Slight wear Abrasion
such as roughening of surfaces will not occur.
〈 Test condition〉 L NSK K1TM
・Test sample: RA35 V1 seal
・Operation without lubrication on the seal
・Feed speed: 30 m/min
■ Applicable models
RA35, RA45 and RA55
■ Dimensions for roller slide with V1 seal Unit: mm
Roller slide length L
Model Equipped with standard seal Equipped with V1 seal Equipped with V1 seal Thickness of V1 seal Thickness of NSK K1
and NSK K1
RA35 AN, AL, EM 123.8 127.8 140.8 3.4 6.5
BN, BL, GM 152 156 169
RA45 AN, AL, EM 154 159.2 173.2 47
BN, BL, GM 190 195.2 209.2
RA55 AN, AL, EM 184 189.2 203.2 47
BN, BL, GM 234 239.2 253.2
Since the sealing property (resistance to foreign matter) is affected by usage or the lubrication environment, please conduct an evaluation test for your particular application.
Observe the following precautions to maintain the long-term efficiency of the performance seals:
Permissible temperature range ----- Maximum operating temperature: 50°C, Maximum instantaneous peak temperature: 80°C
Chemical precautions ----- Never leave the linear guide near grease-removing organic solvents such as hexane or thinner.
Never immerse the linear guide in kerosene or rust preventive oils which contain kerosene.
CAT. No.ESP-140320 2014 X-10 Printed in Japan©NSK Ltd. 2014