Snap Ring Groove Ball Bearings 311A-ZN

The 311A-ZN is a shielded snap ring groove ball bearing with a 55mm bore and 120mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 17805 lbf and operates smoothly at speeds up to 6300 RPM.

Its snap ring groove design ensures secure mounting, while the shielded construction protects against dust and debris. The bearing performs reliably in temperatures from -30°C to 120°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Suitable for applications like electric motors or pumps where radial loads and secure positioning are key.

Weighing 1.5kg, it offers a sturdy build for industrial use. Compliant with RoHS and REACH standards for safety and environmental friendliness.

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Description

Features

Application

Q&A

Product Parameters

Part Number 311A-ZN
Brand TFL
Interchangeable SKF
Bore Dia 55 mm
Bore Dia Tolerance -0.015mm to 0
Outer Dia 120 mm
Outer Dia Tolerance -0.015mm to 0
Width 29 mm
Width Tolerance -0.15mm to 0
Outside Diameter Of Snap Ring 120 mm
Width Of Snap Ring 3.1 mm
System of Measurement Metric
For Load Direction Radial
Construction Single Row
Bearing Type Ball
Seal Type Shielded
Locating Feature Bearing Outer Ring Snap Ring Groove
Tolerance Class ABEC 1 | ISO P0
Radial Clearance Trade No CN
Ring Material Chrome Steel
Ball Material Chrome Steel
Cage Material Chrome Steel
Dynamic Radial Load 17805 lbf
Static Radial Load 15062 lbf
Temperature Range -30°to 120 °C
ROHS Compliant
REACH Compliant
Max Speed 6300 rpm
Weight 1.5 kg
Price（$） 34.6

Snap Ring Groove Ball Bearings 311A-ZN dimension drawing

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Features

How Does 311A-ZN Bearing Support Radial Loads?

311A-ZN Bearing features a single-row design with chrome steel rings and balls, offering strong radial load support.
Its dynamic radial load capacity reaches 17805 lbf, making it suitable for demanding applications.

The shielded seal type protects against contaminants, ensuring smooth operation in various environments.
With a maximum speed of 6,300 rpm, it balances performance and durability.

The snap ring groove on the outer ring simplifies installation and enhances stability.
Its ABEC 1 tolerance class ensures consistent performance for general industrial use.

Application

Industrial Uses of 311A-ZN Bearing
311A-ZN Bearing is commonly used in industrial machinery like pumps and gearboxes, where its shielded design helps keep contaminants out. The snap ring groove feature makes installation and positioning straightforward in tight spaces.

What Makes 311A-ZN Bearing a Preferred Choice?
In automotive applications, 311A-ZN Bearing handles radial loads in components such as alternators and transmission systems. Its chrome steel construction ensures durability even under constant use.

Built for Heavy-Duty Use: 311A-ZN Bearing
For automation equipment, 311A-ZN Bearing provides reliable performance in robotic arms and conveyor systems. The ABEC 1 tolerance ensures smooth operation without excessive maintenance.

Medical vs Industrial: Where 311A-ZN Bearing Excels
While 311A-ZN Bearing isn’t typically used in medical devices, it shines in industrial settings like electric motors and compressors. Its high static radial load capacity makes it suitable for heavy machinery.

Perfect Fit for Automation: 311A-ZN Bearing
In 3D printers and CNC machines, 311A-ZN Bearing offers precise movement thanks to its consistent radial clearance. The shielded seals also help extend its lifespan in dusty environments.