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Product Series of Automation-Related Precision Ball Screws and Linear Rails – High-Precision Ball Screws

NSK Bearings Thrust Bearings 51118

Product Overview

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Thrust Bearings/Bearings

51118

Thrust Ball Bearing

Height T22 mm

Product Features

NSK thrust ball bearing, single-direction 51118 series, model 51118: 90 mm shaft-washer bore, 120 mm housing-washer OD, 22 mm height, flat seat
Basic dynamic load rating Ca 60 kN, basic static load rating C0a 190 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 1900 min⁻¹ (grease), 3000 min⁻¹ (oil)
Carries pure axial load in one direction only — no radial capacity; shaft washer and housing washer must not be reversed
Nahshon is NSK's distributor in Taiwan — add the part number to your inquiry list

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Product Specifications

Specification	Unit	51118
Series	-	51118 series (single direction, flat seat)
Shaft washer bore d	mm	90
Housing washer OD D	mm	120
Height T	mm	22
Min. chamfer r	mm	1
Seat type	-	Flat seat
Basic dynamic load rating Ca	kN	60
Basic static load rating C0a	kN	190
Limiting speed (grease)	min⁻¹	1900
Limiting speed (oil)	min⁻¹	3000

Product Description

The 51118 is an NSK thrust ball bearing from the single-direction 51118 series, standard flat-seat type: 90 mm shaft-washer bore, 120 mm housing-washer outer diameter, 22 mm height. Basic dynamic load rating Ca is 60 kN and basic static load rating C0a is 190 kN (NSK official catalog CAT. No. E1103d). Thrust ball bearings carry pure axial load in one direction only — no radial capacity — and are common in worm-gear reducers, screw jacks and valve actuator shafts where low-speed axial thrust must be supported.

Inquiries & customization

Add this part number to your inquiry list — Nahshon is NSK's distributor in Taiwan and works directly with the factory to confirm specifications, stock and pricing.