KOYO 1205-ZZ-C3 Bearing — Specifications, Dimensions & Cross-Reference

The KOYO 1205-ZZ-C3 is a self-aligning ball bearing double metal shielded manufactured by KOYO. It belongs to the 1200 series and features dimensions of 25 × 52 × 15 mm (bore × OD × width). This bearing has a dynamic load rating of 10,000 N and a static load rating of 3,450 N, making it suitable for light-duty applications.

Technical Specifications

Dimensions
Bore Diameter (d)25 mm
Outside Diameter (D)52 mm
Width (B)15 mm
Weight0.110 kg
Performance
Dynamic Load Rating (Cr)10,000 N
Static Load Rating (C₀r)3,450 N
Limiting Speed (Grease)12,000 rpm
Limiting Speed (Oil)15,000 rpm
💡 Application Note: The 1200 series bearings are commonly used in conveyor rollers, textile machinery, and applications with shaft misalignment. The -ZZ suffix indicates double metal shields, offering good protection while maintaining lower friction than rubber seals — suitable for higher speed applications.

Brand Cross-Reference — 1205-ZZ-C3 Equivalents

The following bearings from other manufacturers are interchangeable with the KOYO 1205-ZZ-C3. All share identical dimensions (25×52×15mm) and comparable load ratings:

BrandPart NumberDynamic Load (N)Static Load (N)
KOYOKOYO 1205-ZZ-C3 ✦10,0003,450
Timken Timken 1205-ZZ-C3 10,000 3,450
SKF SKF 1205-ZZ-C3 10,000 3,450
NACHI NACHI 1205-ZZ-C3 10,000 3,450
Timken Timken 1205-ZZ-C3 10,000 3,450
NSK NSK 1205-ZZ-C3 10,000 3,450
FAG FAG 1205-ZZ-C3 10,000 3,450
NTN NTN 1205-ZZ-C3 10,000 3,450
SKF SKF 1205-ZZ-C3 10,000 3,450

Available Variants

The KOYO 1205 base bearing is available in these configurations:

KOYO 1205-ZZ
Double metal shielded
KOYO 1205-NR
Open with snap ring
KOYO 1205-C3
"Open
KOYO 1205-2Z
Double metal shielded (ISO)
KOYO 1205-2RS-C3
"Double sealed
KOYO 1205-2RS
Double rubber sealed
KOYO 1205
Open (no seal/shield)

Frequently Asked Questions

What are the dimensions of the KOYO 1205-ZZ-C3?

The KOYO 1205-ZZ-C3 has a bore diameter of 25mm, outside diameter of 52mm, and width of 15mm. It weighs 0.110kg.

What is the load capacity of the KOYO 1205-ZZ-C3?

The dynamic load rating (Cr) is 10,000 N and the static load rating (C₀r) is 3,450 N. The maximum recommended speed is 12,000 rpm with grease lubrication or 15,000 rpm with oil lubrication.

What bearings are equivalent to KOYO 1205-ZZ-C3?

The 1205-ZZ-C3 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 25×52×15mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.