NACHI
⌀17
17 × 40 × 13.25 mm
Load C
23.2 kN
Speed
11,000
Weight
0.06 kg

The NACHI 30203 is a small size tapered roller bearings with ISO dimensions 17×40×13.25 mm. Bearings in the 17mm bore range are commonly used in car wheel hubs, light truck gearboxes, forklift axles, differentials. This is an open type, requires periodic lubrication, suitable for clean environments variant. NACHI Japan — bearings and cutting tools, strong in machine tool applications — 5 equivalent brands available under ISO designation 30203.

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NACHI 30203

Tapered Roller Bearings — 17×40×13.25 mm — ISO 30203

Dimensions
Bore Diameter (d)17 mm
Outside Diameter (D)40 mm
Width (B)13.25 mm
Dynamic Load Rating (C)23.2 kN
Static Load Rating (C₀)18.1 kN
Limiting Speed (grease)11,000 rpm
Mass0.06 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
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Technical Specifications

Full specifications for NACHI 30203 per OEM catalog.

Bore Diameter (d)17 mm
Outside Diameter (D)40 mm
Width (B)13.25 mm
Dynamic Load Rating (C)23.2 kN
Static Load Rating (C₀)18.1 kN
Limiting Speed (grease)11,000 rpm
Mass0.06 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO 30203 — interchangeable dimensions.

BrandPart Number
NACHI30203
fag30203
nsk30203
ntn30203
skf30203
koyo30203
timken30203

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

Compare 30203 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NACHI3020317×40×13.2523.218.1Current
FAG3020317×40×13.2523.9—View
ZVL3020317×40×13.2523.4—View
SKF3020317×40×13.2523.4—View
NTN3020317×40×13.2523.4—View
NSK3020317×40×13.2523.4—View
Timken3020317×40×13.2523.6—View
Koyo3020317×40×13.2522.9—View

FAQ — NACHI 30203

Quick answers to common questions.

NACHI 30203 có kích thước d×D×B = 17×40×13.25 mm theo tiêu chuẩn ISO. Đường kính trong d = 17 mm, đường kính ngoài D = 40 mm, chiều rộng B = 13.25 mm.

Common Applications

AutomotiveForklifts

Tapered Roller Bearings with 17mm bore diameter are commonly used in car wheel hubs, light truck gearboxes, forklift axles, differentials.

Learn More

Tapered Roller Bearings: Construction, Pair Mounting & Clearance Adjustment

A tapered roller bearing uses conical rollers to handle heavy combined radial and axial loads through contact angles of 10°–30°. This guide covers cone/cup construction, O/X pair mounting, preload adjustment — sourced from Timken, SKF, ZVL catalogs and ISO 355.

Explore More

Type
All Tapered Roller Bearings
Brand
NACHI Bearings
Combined
NACHI
Catalog
15,800+ Products

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NACHI 30203
17×40×13.25 mm
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