NSK 7216A5TRSULP3 Spindle Bearing 80 × 140 × 26 mm

Angular Contact Ball Bearing

Spindle Bearing

RFQ

In stock

EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.

Category: Spindle Bearing
Bore: 80 mm
Outer Ø: 140 mm
Width: 26 mm

Overview

NSK 7216A5TRSULP3 Spindle Bearing is a super-precision angular contact ball bearing for high-speed, high-accuracy spindle positions in machine tools. It supports low heat generation, high rigidity, and controlled preload to improve machining quality and spindle stability.

It consists of precision-ground rings, high-accuracy balls, and a high-speed cage. P4S-class accuracy and matched arrangements are used to set preload, rigidity, and running accuracy, while lubrication method strongly affects performance.

Key features

Super-precision running accuracy
Low heat generation at high speed
High spindle rigidity through preload matching
Suitable for stable machining quality

Typical applications

Machining center spindles
Grinding and milling spindles
High-speed motor spindles
Precision inspection and processing equipment

Selection guidance

Review precision class, contact angle, arrangement, preload, lubrication method, maximum speed, and required spindle rigidity.

Symbol	Value	Description
≈m	1.424 kg	Weight
Cr	111 kN	Basic dynamic load rating, radial
C_0r	74 kN	Basic static load rating, radial

Symbol	Value	Description
d	80 mm	Bore diameter
D	140 mm	Outside diameter
B	26 mm	Width
H	Without lubrication groove	Lubrication hole diameter

Symbol	Value	Description
T_min	-30 °C	Operating temperature min.
T_max	100 °C	Operating temperature max.

Code	Description
P4	Tolerance class
Hard tissue cage	Cage
Standard bearing steel	Material

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