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

NSK Bearings Thrust Bearings 51115

Product Overview

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Thrust Bearings/Bearings

51115

Thrust Ball Bearing

Height T19 mm

Product Features

NSK thrust ball bearing, single-direction 51115 series, model 51115: 75 mm shaft-washer bore, 100 mm housing-washer OD, 19 mm height, flat seat
Basic dynamic load rating Ca 43.5 kN, basic static load rating C0a 131 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 2200 min⁻¹ (grease), 3400 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	51115
Series	-	51115 series (single direction, flat seat)
Shaft washer bore d	mm	75
Housing washer OD D	mm	100
Height T	mm	19
Min. chamfer r	mm	1
Seat type	-	Flat seat
Basic dynamic load rating Ca	kN	43.5
Basic static load rating C0a	kN	131
Limiting speed (grease)	min⁻¹	2200
Limiting speed (oil)	min⁻¹	3400

Product Description

The 51115 is an NSK thrust ball bearing from the single-direction 51115 series, standard flat-seat type: 75 mm shaft-washer bore, 100 mm housing-washer outer diameter, 19 mm height. Basic dynamic load rating Ca is 43.5 kN and basic static load rating C0a is 131 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.