SKF 6311/W64 Deep Groove Ball Bearing 55 × 120 × 29 mm

Deep Groove Ball Bearing

RFQ

Estimated delivery: 26 Jul 2026 (overseas stock, ~4 weeks)

In stockEstimated delivery: 26 Jul 2026 (overseas stock, ~4 weeks)

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

Category: Deep Groove Ball Bearing
Dimensions: 55x120x29mm

Overview

Deep groove ball bearing

Deep groove ball bearings are the most widely used, versatile bearing type. With deep raceway grooves in both rings, they accommodate radial loads and axial loads in both directions simultaneously. Their simple design enables low friction and high-speed operation, and seal/shield variants retain lubricant and exclude contamination. They serve as standard components in motors, pumps, gear units and a wide range of equipment.

Key features

Accommodate radial and bidirectional axial loads
Low friction, high-speed capable
Seal/shield options reduce maintenance
Highly versatile and interchangeable

Typical applications

Electric motors and generators
Pumps, fans, and blowers
Gearboxes and reducers
Conveyors and general industrial machinery

Selection guidance

Select by bore, outside diameter, width, sealing type, internal clearance, speed rating, and actual radial/axial load conditions.

Symbol	Value	Description
C	74.1 kN	Basic dynamic load rating
C0	45 kN	Basic static load rating
limiting_speed_rpm	3 400 r/min	Limiting speed
note	20 °C (70 °F) 주변 온도에서 한계 속도 r/min	Note
max_operating_temp_c	85 °C	Maximum operating temperature
performance_class	SKF Explorer	SKF performance class

Symbol	Value	Description
d	55 mm	Bore diameter
D	120 mm	Outside diameter
B	29 mm	Width

Code	Description
필링 슬롯	None
열 개수	1
로케이팅 기능, 베어링 외륜	None
보어 유형	Cylindrical
케이지	Sheet metal
일치된 배열	No
경방향 내부틈새	CN
소재, 베어링	Bearing steel
코팅	None
씰링	None
윤활유	고체 오일
재윤활 기능	None
제품 순 중량	1.37 kg
eClass 코드	23-05-08-01
UNSPSC 코드	31171504

datasheet pdf download

Also searched as

The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page: