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

The NTN 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. NTN Japan — Japanese technology, consistent quality, strong in automotive and machine tool bearings — 5 equivalent brands available under ISO designation 30203.

NTNTapered Roller BearingsPre-Order 3–5 Days

NTN 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)23.4 kN
Static Load Rating (C₀)18.3 kN
Limiting Speed (grease)11,000 rpm
Mass0.06 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
Call to OrderZalo Quote
Genuine NTN2–4h delivery in cityFree technical support

Technical Specifications

Full specifications for NTN 30203 per OEM catalog.

Bore Diameter (d)17 mm
Outside Diameter (D)40 mm
Width (B)13.25 mm
Dynamic Load Rating (C)23.4 kN
Static Load Rating (C₀)18.3 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
NTN30203
fag30203
nsk30203
skf30203
koyo30203
nachi30203
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)
NTN3020317×40×13.2523.418.3Current
FAG3020317×40×13.2523.9—View
ZVL3020317×40×13.2523.4—View
SKF3020317×40×13.2523.4—View
NSK3020317×40×13.2523.4—View
Timken3020317×40×13.2523.6—View
Koyo3020317×40×13.2522.9—View
NACHI3020317×40×13.2523.2—View

FAQ — NTN 30203

Quick answers to common questions.

NTN 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
NTN Bearings
Combined
NTN
Catalog
15,800+ Products

Need a Quote for NTN 30203?

Engineers ready for bearing selection, cross-reference, and same-day quotation.

Get a QuoteTechnical Knowledge
NTN 30203
17×40×13.25 mm
Quote