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

NSK Bearings Thrust Bearings 51317

Product Overview

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Thrust Bearings/Bearings

51317

Thrust Ball Bearing

Height T49 mm

Product Features

NSK thrust ball bearing, single-direction 51317 series, model 51317: 85 mm shaft-washer bore, 150 mm housing-washer OD, 49 mm height, flat seat
Basic dynamic load rating Ca 207 kN, basic static load rating C0a 490 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 1100 min⁻¹ (grease), 1700 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	51317
Series	-	51317 series (single direction, flat seat)
Shaft washer bore d	mm	85
Housing washer OD D	mm	150
Height T	mm	49
Min. chamfer r	mm	1.5
Seat type	-	Flat seat
Basic dynamic load rating Ca	kN	207
Basic static load rating C0a	kN	490
Limiting speed (grease)	min⁻¹	1100
Limiting speed (oil)	min⁻¹	1700

Product Description

The 51317 is an NSK thrust ball bearing from the single-direction 51317 series, standard flat-seat type: 85 mm shaft-washer bore, 150 mm housing-washer outer diameter, 49 mm height. Basic dynamic load rating Ca is 207 kN and basic static load rating C0a is 490 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.