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

NSK Bearings Thrust Bearings 51215

Product Overview

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Thrust Bearings/Bearings

51215

Thrust Ball Bearing

Height T27 mm

Product Features

NSK thrust ball bearing, single-direction 51215 series, model 51215: 75 mm shaft-washer bore, 110 mm housing-washer OD, 27 mm height, flat seat
Basic dynamic load rating Ca 78 kN, basic static load rating C0a 209 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 1800 min⁻¹ (grease), 2800 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	51215
Series	-	51215 series (single direction, flat seat)
Shaft washer bore d	mm	75
Housing washer OD D	mm	110
Height T	mm	27
Min. chamfer r	mm	1
Seat type	-	Flat seat
Basic dynamic load rating Ca	kN	78
Basic static load rating C0a	kN	209
Limiting speed (grease)	min⁻¹	1800
Limiting speed (oil)	min⁻¹	2800

Product Description

The 51215 is an NSK thrust ball bearing from the single-direction 51215 series, standard flat-seat type: 75 mm shaft-washer bore, 110 mm housing-washer outer diameter, 27 mm height. Basic dynamic load rating Ca is 78 kN and basic static load rating C0a is 209 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.