NSK
⌀30
30 × 60 × 21 mm
Load C
36.5 kN
Speed
3,800
Weight
0.2 kg

The NSK 51306 is a small size thrust ball bearings with ISO dimensions 30×60×21 mm. Bearings in the 30mm bore range are commonly used in CNC rotary tables, couplings, hydraulic jacks, small vertical motor shafts. This is an open type, requires periodic lubrication, suitable for clean environments variant. NSK Japan — precision bearing specialist, CNC spindles and high-speed bearings — 4 equivalent brands available under ISO designation 51306.

NSKThrust Ball BearingsPre-Order 3–5 Days

NSK 51306

Thrust Ball Bearings — 30×60×21 mm — ISO 51306

Dimensions
Bore Diameter (d)30 mm
Outside Diameter (D)60 mm
Width (B)21 mm
Dynamic Load Rating (C)36.5 kN
Static Load Rating (C₀)51 kN
Limiting Speed (grease)3,800 rpm
Mass0.2 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
Genuine NSK2–4h delivery in cityFree technical support

Technical Specifications

Full specifications for NSK 51306 per OEM catalog.

Bore Diameter (d)30 mm
Outside Diameter (D)60 mm
Width (B)21 mm
Dynamic Load Rating (C)36.5 kN
Static Load Rating (C₀)51 kN
Limiting Speed (grease)3,800 rpm
Mass0.2 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO 51306 — interchangeable dimensions.

BrandPart Number
NSK51306
fag51306
ntn51306
skf51306
zvl51306
nachi51306

* C/C₀ may vary ±5% across manufacturers.

Compare 51306 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NSK5130630×60×2136.551Current
FAG5130630×60×2137.2—View
NACHI5130630×60×2136.1—View
NTN5130630×60×2136.5—View
SKF5130630×60×2136.5—View
ZVL5130630×60×2136.5—View

FAQ — NSK 51306

Quick answers to common questions.

NSK 51306 có kích thước d×D×B = 30×60×21 mm theo tiêu chuẩn ISO. Đường kính trong d = 30 mm, đường kính ngoài D = 60 mm, chiều rộng B = 21 mm.

Common Applications

Machine toolsAutomotive

Thrust Ball Bearings with 30mm bore diameter are commonly used in CNC rotary tables, couplings, hydraulic jacks, small vertical motor shafts.

Need a Quote for NSK 51306?

Engineers ready for bearing selection, cross-reference, and same-day quotation.

NSK 51306
30×60×21 mm
Quote