NTN
17
17 × 35 × 12 mm
Load C
15.3 kN
Speed
6,300
Weight
0.05 kg

The NTN 51203 is a small size thrust ball bearings with ISO dimensions 17×35×12 mm. Bearings in the 17mm 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 51203.

NTNThrust Ball BearingsPre-Order 3–5 Days

NTN 51203

Thrust Ball Bearings17×35×12 mm — ISO 51203

Dimensions
Bore Diameter (d)17 mm
Outside Diameter (D)35 mm
Width (B)12 mm
Dynamic Load Rating (C)15.3 kN
Static Load Rating (C₀)19.6 kN
Limiting Speed (grease)6,300 rpm
Mass0.05 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
Genuine NTN2–4h delivery in cityFree technical support

Technical Specifications

Full specifications for NTN 51203 per OEM catalog.

Bore Diameter (d)17 mm
Outside Diameter (D)35 mm
Width (B)12 mm
Dynamic Load Rating (C)15.3 kN
Static Load Rating (C₀)19.6 kN
Limiting Speed (grease)6,300 rpm
Mass0.05 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO 51203 — interchangeable dimensions.

BrandPart Number
NTN51203
fag51203
nsk51203
skf51203
zvl51203
nachi51203

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

Compare 51203 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NTN5120317×35×1215.319.6Current
ZVL5120317×35×1215.3View
FAG5120317×35×1215.6View
NACHI5120317×35×1215.1View
NSK5120317×35×1215.3View
SKF5120317×35×1215.3View

FAQ — NTN 51203

Quick answers to common questions.

NTN 51203 có kích thước d×D×B = 17×35×12 mm theo tiêu chuẩn ISO. Đường kính trong d = 17 mm, đường kính ngoài D = 35 mm, chiều rộng B = 12 mm.

Common Applications

Machine toolsAutomotive

Thrust Ball Bearings with 17mm bore diameter are commonly used in CNC rotary tables, couplings, hydraulic jacks, small vertical motor shafts.

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NTN 51203
17×35×12 mm
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