NSK
45
45 × 85 × 28 mm
Load C
63 kN
Speed
2,600
Weight
0.52 kg

The NSK 51309 is a standard size thrust ball bearings with ISO dimensions 45×85×28 mm. Bearings in the 45mm bore range are commonly used in vertical ball screws, large CNC rotary tables, heavy jacks, vertical pump 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 51309.

NSKThrust Ball BearingsPre-Order 3–5 Days

NSK 51309

Thrust Ball Bearings45×85×28 mm — ISO 51309

Dimensions
Bore Diameter (d)45 mm
Outside Diameter (D)85 mm
Width (B)28 mm
Dynamic Load Rating (C)63 kN
Static Load Rating (C₀)96 kN
Limiting Speed (grease)2,600 rpm
Mass0.52 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
Genuine NSK2–4h delivery in cityFree technical support

Technical Specifications

Full specifications for NSK 51309 per OEM catalog.

Bore Diameter (d)45 mm
Outside Diameter (D)85 mm
Width (B)28 mm
Dynamic Load Rating (C)63 kN
Static Load Rating (C₀)96 kN
Limiting Speed (grease)2,600 rpm
Mass0.52 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO 51309 — interchangeable dimensions.

BrandPart Number
NSK51309
fag51309
ntn51309
skf51309
zvl51309
nachi51309

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

Compare 51309 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NSK5130945×85×286396Current
FAG5130945×85×2864.3View
NACHI5130945×85×2862.4View
NTN5130945×85×2863View
SKF5130945×85×2863View
ZVL5130945×85×2863View

FAQ — NSK 51309

Quick answers to common questions.

NSK 51309 có kích thước d×D×B = 45×85×28 mm theo tiêu chuẩn ISO. Đường kính trong d = 45 mm, đường kính ngoài D = 85 mm, chiều rộng B = 28 mm.

Common Applications

ManufacturingEnergy

Thrust Ball Bearings with 45mm bore diameter are commonly used in vertical ball screws, large CNC rotary tables, heavy jacks, vertical pump shafts.

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NSK 51309
45×85×28 mm
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