NACHI
⌀17
17 × 30 × 9 mm
Load C
9.9 kN
Speed
7,500
Weight
0.03 kg

The NACHI 51103 is a small size thrust ball bearings with ISO dimensions 17×30×9 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. NACHI Japan — bearings and cutting tools, strong in machine tool applications — 4 equivalent brands available under ISO designation 51103.

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NACHI 51103

Thrust Ball Bearings — 17×30×9 mm — ISO 51103

Dimensions
Bore Diameter (d)17 mm
Outside Diameter (D)30 mm
Width (B)9 mm
Dynamic Load Rating (C)9.9 kN
Static Load Rating (C₀)12.8 kN
Limiting Speed (grease)7,500 rpm
Mass0.03 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
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Technical Specifications

Full specifications for NACHI 51103 per OEM catalog.

Bore Diameter (d)17 mm
Outside Diameter (D)30 mm
Width (B)9 mm
Dynamic Load Rating (C)9.9 kN
Static Load Rating (C₀)12.8 kN
Limiting Speed (grease)7,500 rpm
Mass0.03 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO 51103 — interchangeable dimensions.

BrandPart Number
NACHI51103
fag51103
nsk51103
ntn51103
skf51103
zvl51103

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

Compare 51103 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NACHI5110317×30×99.912.8Current
ZVL5110317×30×910—View
FAG5110317×30×910.2—View
NSK5110317×30×910—View
NTN5110317×30×910—View
SKF5110317×30×910—View

FAQ — NACHI 51103

Quick answers to common questions.

NACHI 51103 có kích thước d×D×B = 17×30×9 mm theo tiêu chuẩn ISO. Đường kính trong d = 17 mm, đường kính ngoài D = 30 mm, chiều rộng B = 9 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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NACHI 51103
17×30×9 mm
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