NTN
40
40 × 68 × 19 mm
Load C
40.5 kN
Speed
3,600
Weight
0.23 kg

The NTN 51208 is a standard size thrust ball bearings with ISO dimensions 40×68×19 mm. Bearings in the 40mm 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. NTN Japan — Japanese technology, consistent quality, strong in automotive and machine tool bearings — 4 equivalent brands available under ISO designation 51208.

NTNThrust Ball BearingsPre-Order 3–5 Days

NTN 51208

Thrust Ball Bearings40×68×19 mm — ISO 51208

Dimensions
Bore Diameter (d)40 mm
Outside Diameter (D)68 mm
Width (B)19 mm
Dynamic Load Rating (C)40.5 kN
Static Load Rating (C₀)58.5 kN
Limiting Speed (grease)3,600 rpm
Mass0.23 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
Genuine NTN2–4h delivery in cityFree technical support

Technical Specifications

Full specifications for NTN 51208 per OEM catalog.

Bore Diameter (d)40 mm
Outside Diameter (D)68 mm
Width (B)19 mm
Dynamic Load Rating (C)40.5 kN
Static Load Rating (C₀)58.5 kN
Limiting Speed (grease)3,600 rpm
Mass0.23 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO 51208 — interchangeable dimensions.

BrandPart Number
NTN51208
fag51208
nsk51208
skf51208
zvl51208
nachi51208

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

Compare 51208 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NTN5120840×68×1940.558.5Current
FAG5120840×68×1941.3View
NACHI5120840×68×1940.1View
NSK5120840×68×1940.5View
SKF5120840×68×1940.5View
ZVL5120840×68×1940.5View

FAQ — NTN 51208

Quick answers to common questions.

NTN 51208 có kích thước d×D×B = 40×68×19 mm theo tiêu chuẩn ISO. Đường kính trong d = 40 mm, đường kính ngoài D = 68 mm, chiều rộng B = 19 mm.

Common Applications

Machine toolsAutomotive

Thrust Ball Bearings with 40mm bore diameter are commonly used in CNC rotary tables, couplings, hydraulic jacks, small vertical motor shafts.

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NTN 51208
40×68×19 mm
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