SNR ES206G2 30x62 Insert Bearing with Eccentric Locking Collar

SNR ES206G2 30x62 Insert Bearing with Eccentric Locking Collar

SNR ES206G2 is an insert bearing designed for use in self-aligning bearing units. It has a 30 mm shaft diameter, 62 mm spherical outer diameter and 16 mm outer ring width C. Unlike a standard 6206 deep groove ball bearing, ES206G2 has an extended inner ring and an eccentric locking collar for shaft mounting. NTN-SNR specifies a single lip sealing system.

SNR ES206G2 - Characteristics

The defining feature of ES206G2 is its spherical outer ring surface. When installed in a compatible bearing housing, this geometry allows the insert to align within the housing seat and compensate for initial alignment errors.

The inner ring is extended beyond the outer ring, while the eccentric collar provides mechanical locking of the bearing on a 30 mm shaft.

SNR ES206G2 Dimensions

According to the official NTN-SNR product data:

d - Shaft Diameter: 30 mm
D - Outer Ring Diameter: 62 mm
B - Inner Ring Width: 23.8 mm
B1 - Overall Inner Ring Width: 35.7 mm
B2 - Eccentric Locking Collar Width: 15.9 mm
C - Outer Ring Width: 16 mm
d1 - Eccentric Collar Outside Diameter: 44.1 mm
S - Front Side to Bearing Centre: 9 mm
C1 - Outer Ring Centre to Lubrication Zone: 5 mm
m - Distance to Set Screw: 6 mm
r - Inner Ring Radius: 0.6 mm

Therefore, the commercial description 30x62x16 mm must be interpreted as d x D x C, not as the overall dimensions of the complete insert. The overall inner ring width B1 is 35.7 mm.

Eccentric Locking Collar

ES206G2 is mounted on the shaft using an eccentric locking collar. This is a key construction feature distinguishing the ES series from insert bearings using alternative shaft locking systems.

NTN-SNR specifies:

Set Screw: M8x1
Wrench Size SW: 4 mm
Recommended Set Screw Tightening Torque: 11.5 N-m

The correct locking method should be considered when replacing an insert bearing, even when shaft and outer ring diameters are identical.

Spherical Outer Diameter

The 62 mm outer diameter is spherical, allowing the insert bearing to operate in a compatible self-aligning bearing housing.

The self-aligning function results from interaction between the spherical outside surface of the bearing insert and the corresponding housing seat. It should not be confused with the internal self-aligning construction used in self-aligning ball bearings.

Sealing

NTN-SNR specifies a single lip seal for ES206G2.

The sealing configuration is therefore part of the exact ES206G2 specification and should be considered when comparing this bearing with other 206-size insert bearings.

Load Ratings

Official NTN-SNR data specify:

Basic Dynamic Load Rating C: 19.5 kN
Basic Static Load Rating C0: 11.2 kN

These values apply to the exact SNR ES206G2 reference and can be used when evaluating the bearing for a specific bearing arrangement.

Operating Temperature

NTN-SNR specifies the operating temperature range for ES206G2 as:

Minimum Operating Temperature: -20°C
Maximum Operating Temperature: +100°C

The temperature limits should be considered together with load, speed, lubrication, housing and environmental conditions.

Selection and Interchangeability

When selecting a replacement for SNR ES206G2, verify more than the 30 mm bore and 62 mm outside diameter.

Important parameters include:

Bearing Type: Insert bearing
Shaft Diameter d: 30 mm
Outer Diameter D: 62 mm
Outer Ring Width C: 16 mm
Overall Inner Ring Width B1: 35.7 mm
Outer Surface: Spherical
Shaft Locking: Eccentric locking collar
Set Screw: M8x1
Sealing: Single lip

A standard 30x62 bearing is therefore not automatically interchangeable with ES206G2.

Technical Specification

Manufacturer: SNR / NTN-SNR
Designation: ES206G2
Product Type: Insert bearing
Application Group: Self-aligning bearing units
Shaft Diameter d: 30 mm
Outer Diameter D: 62 mm
Inner Ring Width B: 23.8 mm
Overall Inner Ring Width B1: 35.7 mm
Eccentric Collar Width B2: 15.9 mm
Outer Ring Width C: 16 mm
Eccentric Collar Diameter d1: 44.1 mm
Outer Ring: Spherical outside surface
Shaft Fixing: Eccentric locking collar
Seal: Single lip
Set Screw: M8x1
Wrench Size: 4 mm
Set Screw Tightening Torque: 11.5 N-m
Dynamic Load Rating C: 19.5 kN
Static Load Rating C0: 11.2 kN
Operating Temperature: -20°C to +100°C
Mass: 0.33 kg

FAQ

What are the dimensions of SNR ES206G2?

The principal dimensions are d = 30 mm and D = 62 mm. The outer ring width C is 16 mm, inner ring width B is 23.8 mm and overall inner ring width B1 is 35.7 mm.

Is ES206G2 a standard 30x62x16 ball bearing?

No. It is an insert bearing with a spherical outer diameter and extended inner ring. The 16 mm dimension refers specifically to outer ring width C.

How is SNR ES206G2 fixed to the shaft?

The bearing uses an eccentric locking collar with an M8x1 set screw. NTN-SNR specifies a tightening torque of 11.5 N-m.

What does the spherical outer diameter do?

It allows the insert to align in a compatible spherical housing seat, helping compensate for initial misalignment between the shaft and housing.

What load ratings does ES206G2 have?

NTN-SNR specifies C = 19.5 kN dynamic load rating and C0 = 11.2 kN static load rating.

What is the operating temperature range?

The manufacturer specifies an operating range of -20°C to +100°C.

Can another 30x62 mm bearing replace ES206G2?

Not automatically. The spherical outer ring, extended inner ring dimensions, eccentric locking collar, sealing arrangement and load ratings must also be compatible.

AI Overview

SNR ES206G2 is an insert bearing for self-aligning bearing units with a 30 mm shaft diameter and 62 mm spherical outer diameter. It features an eccentric locking collar and single lip seal. NTN-SNR specifies C = 16 mm outer ring width, B1 = 35.7 mm overall inner ring width and a 19.5 kN dynamic load rating.