NACHI
⌀21.43
21.43 × 50.01 × 17.53 mm
Load C
29.7 kN
Speed
7,000
Weight
0.1 kg

The NACHI M12649/M12610 is a small size tapered roller bearings with ISO dimensions 21.43×50.01×17.53 mm. Bearings in the 21.43mm 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 — 6 equivalent brands available under ISO designation M12649/M12610.

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NACHI M12649/M12610

Tapered Roller Bearings — 21.43×50.01×17.53 mm — ISO M12649/M12610

Dimensions
Bore Diameter (d)21.43 mm
Outside Diameter (D)50.01 mm
Width (B)17.53 mm
Dynamic Load Rating (C)29.7 kN
Static Load Rating (C₀)21.8 kN
Limiting Speed (grease)7,000 rpm
Mass0.1 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0
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Technical Specifications

Full specifications for NACHI M12649/M12610 per OEM catalog.

Bore Diameter (d)21.43 mm
Outside Diameter (D)50.01 mm
Width (B)17.53 mm
Dynamic Load Rating (C)29.7 kN
Static Load Rating (C₀)21.8 kN
Limiting Speed (grease)7,000 rpm
Mass0.1 kg
Seal TypeOpen
ClearanceCN
Precision ClassP0

* Tolerances per ISO. Specifications per OEM catalog.

Cross-Reference — Equivalent Codes

Same ISO M12649/M12610 — interchangeable dimensions.

BrandPart Number
NACHIM12649/M12610
fagM12649/M12610
nskM12649/M12610
ntnM12649/M12610
skfM12649/M12610
zvlM12649/M12610
koyoM12649/M12610
timkenM12649/M12610

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

Compare M12649/M12610 Across Brands

Same interchangeable dimensions — different load ratings and pricing.

BrandSKUd×D×BC (kN)C₀ (kN)
NACHIM12649/M1261021.43×50.01×17.5329.721.8Current
FAGM12649/M1261021.43×50.01×17.5330.6—View
KoyoM12649/M1261021.43×50.01×17.5329.4—View
NSKM12649/M1261021.43×50.01×17.5330—View
NTNM12649/M1261021.43×50.01×17.5330—View
SKFM12649/M1261021.43×50.01×17.5330—View
TimkenM12649/M1261021.43×50.01×17.5330.3—View
ZVLM12649/M1261021.43×50.01×17.5330—View

FAQ — NACHI M12649/M12610

Quick answers to common questions.

NACHI M12649/M12610 có kích thước d×D×B = 21.43×50.01×17.53 mm theo tiêu chuẩn ISO. Đường kính trong d = 21.43 mm, đường kính ngoài D = 50.01 mm, chiều rộng B = 17.53 mm.

Common Applications

AutomotiveForklifts

Tapered Roller Bearings with 21.43mm 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 M12649/M12610
21.43×50.01×17.53 mm
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