Timken 6305-NR Bearing — Specifications, Dimensions & Cross-Reference

The Timken 6305-NR is a deep groove ball bearing with snap ring groove manufactured by Timken. It belongs to the 6300 series and features dimensions of 25 × 62 × 17 mm (bore × OD × width). This bearing has a dynamic load rating of 22,500 N and a static load rating of 11,600 N, making it suitable for heavy-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)25 mm
Outside Diameter (D)62 mm
Width (B)17 mm
Weight0.213 kg
Performance
Dynamic Load Rating (Cr)22,500 N
Static Load Rating (C₀r)11,600 N
Limiting Speed (Grease)11,000 rpm
Limiting Speed (Oil)14,000 rpm
💡 Application Note: The 6300 series bearings are commonly used in heavy-duty electric motors, mining equipment, construction machinery, and industrial gearboxes. The -NR suffix indicates an external snap ring groove on the outer ring, allowing easy axial location in housing bores.

Brand Cross-Reference — 6305-NR Equivalents

The following bearings from other manufacturers are interchangeable with the Timken 6305-NR. All share identical dimensions (25×62×17mm) and comparable load ratings:

BrandPart NumberDynamic Load (N)Static Load (N)
TimkenTimken 6305-NR ✦22,50011,600
SKF SKF 6305-NR 22,500 11,600
NTN NTN 6305-NR 22,500 11,600
NACHI NACHI 6305-NR 22,500 11,600
KOYO KOYO 6305-NR 22,500 11,600
FAG FAG 6305-NR 22,500 11,600
Timken Timken 6305-NR 22,500 11,600
NSK NSK 6305-NR 22,500 11,600
NTN NTN 6305-NR 22,500 11,600
SKF SKF 6305-NR 22,500 11,600

Available Variants

The Timken 6305 base bearing is available in these configurations:

Timken 6305-ZZ-C3
"Double shielded
Timken 6305-ZZ
Double metal shielded
Timken 6305-2Z
Double metal shielded (ISO)
Timken 6305-2RS-C3
"Double sealed
Timken 6305-2RS
Double rubber sealed
Timken 6305
Open (no seal/shield)
Timken 6305-NR
Open with snap ring
Timken 6305-ZZ-C3
Double shielded, C3 clearance
Timken 6305-2RS-C3
Double sealed, C3 clearance
Timken 6305-C3
Open, C3 clearance
Timken 6305-2Z
Double metal shielded (ISO)
Timken 6305-ZZ
Double metal shielded
Timken 6305-2RS
Double rubber sealed
Timken 6305
Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the Timken 6305-NR?

The Timken 6305-NR has a bore diameter of 25mm, outside diameter of 62mm, and width of 17mm. It weighs 0.213kg.

What is the load capacity of the Timken 6305-NR?

The dynamic load rating (Cr) is 22,500 N and the static load rating (C₀r) is 11,600 N. The maximum recommended speed is 11,000 rpm with grease lubrication or 14,000 rpm with oil lubrication.

What bearings are equivalent to Timken 6305-NR?

The 6305-NR is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 25×62×17mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.