NACHI
4
4 × 8 × 8 mm
Load C
2.7 kN
Speed
42,000
Weight
0.001 kg

The NACHI HK0408 is a miniature size needle roller bearings with ISO dimensions 4×8×8 mm. Bearings in the 4mm 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. NACHI Japan — bearings and cutting tools, strong in machine tool applications — 3 equivalent brands available under ISO designation HK0408.

NACHINeedle Roller BearingsPre-Order 3–5 Days

NACHI HK0408

Needle Roller Bearings4×8×8 mm — ISO HK0408

Dimensions
Bore Diameter (d)4 mm
Outside Diameter (D)8 mm
Width (B)8 mm
Dynamic Load Rating (C)2.7 kN
Static Load Rating (C₀)2 kN
Limiting Speed (grease)42,000 rpm
Mass0.001 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
Genuine NACHI2–4h delivery in cityFree technical support

Technical Specifications

Full specifications for NACHI HK0408 per OEM catalog.

Bore Diameter (d)4 mm
Outside Diameter (D)8 mm
Width (B)8 mm
Dynamic Load Rating (C)2.7 kN
Static Load Rating (C₀)2 kN
Limiting Speed (grease)42,000 rpm
Mass0.001 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO HK0408 — interchangeable dimensions.

BrandPart Number
NACHIHK0408
ikoHK0408
nskHK0408
ntnHK0408
skfHK0408

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

Compare HK0408 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NACHIHK04084×8×82.72Current
IKOHK04084×8×82.7View
NSKHK04084×8×82.7View
NTNHK04084×8×82.7View
SKFHK04084×8×82.7View

FAQ — NACHI HK0408

Quick answers to common questions.

NACHI HK0408 có kích thước d×D×B = 4×8×8 mm theo tiêu chuẩn ISO. Đường kính trong d = 4 mm, đường kính ngoài D = 8 mm, chiều rộng B = 8 mm.

Common Applications

AutomotiveRobotics

Needle Roller Bearings with 4mm bore diameter are commonly used in automatic car transmissions, universal joints, industrial robots, sewing machines.

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NACHI HK0408
4×8×8 mm
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