NTN
8
8 × 12 × 8 mm
Load C
4.2 kN
Speed
32,000
Weight
0.002 kg

The NTN HK0808 is a miniature size needle roller bearings with ISO dimensions 8×12×8 mm. Bearings in the 8mm bore range are commonly used in automatic car transmissions, universal joints, industrial robots, sewing machines. 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 — 3 equivalent brands available under ISO designation HK0808.

NTNNeedle Roller BearingsPre-Order 3–5 Days

NTN HK0808

Needle Roller Bearings8×12×8 mm — ISO HK0808

Dimensions
Bore Diameter (d)8 mm
Outside Diameter (D)12 mm
Width (B)8 mm
Dynamic Load Rating (C)4.2 kN
Static Load Rating (C₀)3.6 kN
Limiting Speed (grease)32,000 rpm
Mass0.002 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
Genuine NTN2–4h delivery in cityFree technical support

Technical Specifications

Full specifications for NTN HK0808 per OEM catalog.

Bore Diameter (d)8 mm
Outside Diameter (D)12 mm
Width (B)8 mm
Dynamic Load Rating (C)4.2 kN
Static Load Rating (C₀)3.6 kN
Limiting Speed (grease)32,000 rpm
Mass0.002 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO HK0808 — interchangeable dimensions.

BrandPart Number
NTNHK0808
ikoHK0808
nskHK0808
skfHK0808
nachiHK0808

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

Compare HK0808 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NTNHK08088×12×84.23.6Current
IKOHK08088×12×84.2View
NACHIHK08088×12×84.2View
NSKHK08088×12×84.2View
SKFHK08088×12×84.2View

FAQ — NTN HK0808

Quick answers to common questions.

NTN HK0808 có kích thước d×D×B = 8×12×8 mm theo tiêu chuẩn ISO. Đường kính trong d = 8 mm, đường kính ngoài D = 12 mm, chiều rộng B = 8 mm.

Common Applications

AutomotiveRobotics

Needle Roller Bearings with 8mm bore diameter are commonly used in automatic car transmissions, universal joints, industrial robots, sewing machines.

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NTN HK0808
8×12×8 mm
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