NSK 6313-2RS Bearing — Specifications, Dimensions & Cross-Reference

The NSK 6313-2RS is a deep groove ball bearing double rubber sealed manufactured by NSK. It belongs to the 6300 series and features dimensions of 65 × 140 × 33 mm (bore × OD × width). This bearing has a dynamic load rating of 92,300 N and a static load rating of 60,000 N, making it suitable for heavy-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)	65 mm
Outside Diameter (D)	140 mm
Width (B)	33 mm
Weight	2.020 kg

Performance
Dynamic Load Rating (Cr)	92,300 N
Static Load Rating (C₀r)	60,000 N
Limiting Speed (Grease)	4,800 rpm
Limiting Speed (Oil)	5,600 rpm

💡 Application Note: The 6300 series bearings are commonly used in heavy-duty electric motors, mining equipment, construction machinery, and industrial gearboxes. The -2RS suffix indicates double rubber contact seals, providing excellent protection against dust, moisture, and contaminants — ideal for harsh operating environments.

Brand Cross-Reference — 6313-2RS Equivalents

The following bearings from other manufacturers are interchangeable with the NSK 6313-2RS. All share identical dimensions (65×140×33mm) and comparable load ratings:

Brand	Part Number	Dynamic Load (N)	Static Load (N)
NSK	NSK 6313-2RS ✦	92,300	60,000
Timken	Timken 6313-2RS	92,300	60,000
SKF	SKF 6313-2RS	92,300	60,000
NTN	NTN 6313-2RS	92,300	60,000
NACHI	NACHI 6313-2RS	92,300	60,000
KOYO	KOYO 6313-2RS	92,300	60,000
FAG	FAG 6313-2RS	92,300	60,000
Timken	Timken 6313-2RS	92,300	60,000
NTN	NTN 6313-2RS	92,300	60,000
SKF	SKF 6313-2RS	92,300	60,000

Available Variants

The NSK 6313 base bearing is available in these configurations:

NSK 6313-NR

Open with snap ring

NSK 6313-ZZ-C3

Double shielded, C3 clearance

NSK 6313-2RS-C3

Double sealed, C3 clearance

NSK 6313-C3

Open, C3 clearance

NSK 6313-2Z

Double metal shielded (ISO)

NSK 6313-ZZ

Double metal shielded

NSK 6313

Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the NSK 6313-2RS?

The NSK 6313-2RS has a bore diameter of 65mm, outside diameter of 140mm, and width of 33mm. It weighs 2.020kg.

What is the load capacity of the NSK 6313-2RS?

The dynamic load rating (Cr) is 92,300 N and the static load rating (C₀r) is 60,000 N. The maximum recommended speed is 4,800 rpm with grease lubrication or 5,600 rpm with oil lubrication.

What bearings are equivalent to NSK 6313-2RS?

The 6313-2RS is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 65×140×33mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.