NTN
50
50 × 78 × 22 mm
Load C
48.5 kN
Speed
3,000
Weight
0.3 kg

The NTN 51210 is a standard size thrust ball bearings with ISO dimensions 50×78×22 mm. Bearings in the 50mm 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. NTN Japan — Japanese technology, consistent quality, strong in automotive and machine tool bearings — 4 equivalent brands available under ISO designation 51210.

NTNThrust Ball BearingsPre-Order 3–5 Days

NTN 51210

Thrust Ball Bearings50×78×22 mm — ISO 51210

Dimensions
Bore Diameter (d)50 mm
Outside Diameter (D)78 mm
Width (B)22 mm
Dynamic Load Rating (C)48.5 kN
Static Load Rating (C₀)73.5 kN
Limiting Speed (grease)3,000 rpm
Mass0.3 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
Genuine NTN2–4h delivery in cityFree technical support

Technical Specifications

Full specifications for NTN 51210 per OEM catalog.

Bore Diameter (d)50 mm
Outside Diameter (D)78 mm
Width (B)22 mm
Dynamic Load Rating (C)48.5 kN
Static Load Rating (C₀)73.5 kN
Limiting Speed (grease)3,000 rpm
Mass0.3 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO 51210 — interchangeable dimensions.

BrandPart Number
NTN51210
fag51210
nsk51210
skf51210
zvl51210
nachi51210

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

Compare 51210 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NTN5121050×78×2248.573.5Current
FAG5121050×78×2249.5View
NACHI5121050×78×2248View
NSK5121050×78×2248.5View
SKF5121050×78×2248.5View
ZVL5121050×78×2248.5View

FAQ — NTN 51210

Quick answers to common questions.

NTN 51210 có kích thước d×D×B = 50×78×22 mm theo tiêu chuẩn ISO. Đường kính trong d = 50 mm, đường kính ngoài D = 78 mm, chiều rộng B = 22 mm.

Common Applications

ManufacturingEnergy

Thrust Ball Bearings with 50mm bore diameter are commonly used in vertical ball screws, large CNC rotary tables, heavy jacks, vertical pump shafts.

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NTN 51210
50×78×22 mm
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