L
o
a
d
i
n
g
.
.
.

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

NSK Bearings Thrust Bearings 51111

Product Overview

L
o
a
d
i
n
g
.
.
.

Thrust Bearings/Bearings

51111

Thrust Ball Bearing

Height T16 mm

Product Features

NSK thrust ball bearing, single-direction 51111 series, model 51111: 55 mm shaft-washer bore, 78 mm housing-washer OD, 16 mm height, flat seat
Basic dynamic load rating Ca 35 kN, basic static load rating C0a 93 kN (NSK official catalog CAT. No. E1103d)
Limiting speed approx. 2800 min⁻¹ (grease), 4300 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

Quantity

Quick Inquiry

Call Us Email Us Contact Us About This Product

Product Specifications

Specification	Unit	51111
Series	-	51111 series (single direction, flat seat)
Shaft washer bore d	mm	55
Housing washer OD D	mm	78
Height T	mm	16
Min. chamfer r	mm	0.6
Seat type	-	Flat seat
Basic dynamic load rating Ca	kN	35
Basic static load rating C0a	kN	93
Limiting speed (grease)	min⁻¹	2800
Limiting speed (oil)	min⁻¹	4300

Product Description

The 51111 is an NSK thrust ball bearing from the single-direction 51111 series, standard flat-seat type: 55 mm shaft-washer bore, 78 mm housing-washer outer diameter, 16 mm height. Basic dynamic load rating Ca is 35 kN and basic static load rating C0a is 93 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.