NACHI
40
40 × 90 × 23 mm
Load C
40.6 kN
Speed
8,000
Weight
0.56 kg

The NACHI 6308 is a standard size deep groove ball bearings with ISO dimensions 40×90×23 mm. Bearings in the 40mm bore range are commonly used in motors 5.5-37kW, centrifugal pumps, air compressors, industrial gearboxes (5.5-37kW range). This is an open type, requires periodic lubrication, suitable for clean environments variant. NACHI Japan — bearings and cutting tools, strong in machine tool applications — 6 equivalent brands available under ISO designation 6308.

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NACHI 6308

Deep Groove Ball Bearings40×90×23 mm — ISO 6308

Dimensions
Bore Diameter (d)40 mm
Outside Diameter (D)90 mm
Width (B)23 mm
Dynamic Load Rating (C)40.6 kN
Static Load Rating (C₀)22.2 kN
Limiting Speed (grease)8,000 rpm
Mass0.56 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
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Technical Specifications

Full specifications for NACHI 6308 per OEM catalog.

Bore Diameter (d)40 mm
Outside Diameter (D)90 mm
Width (B)23 mm
Dynamic Load Rating (C)40.6 kN
Static Load Rating (C₀)22.2 kN
Limiting Speed (grease)8,000 rpm
Mass0.56 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO 6308 — interchangeable dimensions.

BrandPart Number
NACHI6308
fag6308
nsk6308
ntn6308
skf6308
zvl6308
koyo6308
timken6308

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

Compare 6308 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NACHI630840×90×2340.622.2Current
FAG630840×90×2341.8View
FAG6308-2RSR40×90×2341.8View
FAG6308-2Z40×90×2341.8View
Koyo630840×90×2340.2View
Koyo63082RS40×90×2340.2View
Koyo6308ZZ40×90×2340.2View
NACHI63082NSLE40×90×2340.6View
NACHI6308ZZE40×90×2340.6View

FAQ — NACHI 6308

Quick answers to common questions.

NACHI 6308 có kích thước d×D×B = 40×90×23 mm theo tiêu chuẩn ISO. Đường kính trong d = 40 mm, đường kính ngoài D = 90 mm, chiều rộng B = 23 mm.

Common Applications

Heavy industryPumps

Deep Groove Ball Bearings with 40mm bore diameter are commonly used in motors 5.5-37kW, centrifugal pumps, air compressors, industrial gearboxes (5.5-37kW range).

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NACHI 6308
40×90×23 mm
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