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Drawing of 21309 E: ⌀45 × ⌀100 × 25 mm⌀100⌀452521309 E
Fig. 1: 21309 E, end view and section; internal parts simplified per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 21309 E

Load: radial high; axial medium, on both sidesSpherical roller

Bearing SKF 21309 E

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Specifications

Manufacturer number
ISO designation
Equivalents
1 exact, 6 approximate
d
45 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
100 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
25 mm
Width BRing width. Source: supplier data
Seal
open, no protection
Clearance
normal clearance
C
125 kN
Basic dynamic load rating CLoad for one million revolutions at 90 % reliability; the L10 life is calculated from it as (C/P)^p. ISO method, manufacturer’s figure: do not carry it over to another brand. Source: supplier data
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Equivalents

the same size 45 × 100 × 25 from other brands

7 products
Cross-section drawing to size: Spherical roller, 45 × 100 × 25 mm
You are viewingSKF 21309 E

Same size, different design: the difference is written in the row.

  • Cross-section drawing to size: Spherical roller, 45 × 100 × 25 mm21309 CA/W33CA, lubrication groove and holesCT45 × 100 × 25available to orderon requestRequest a quote
  • Cross-section drawing to size: Spherical roller, 45 × 100 × 25 mm21309 EAKE4EA, lubrication groove and holes, 1:12 tapered boreNSK45 × 100 × 25available to orderon requestRequest a quote
  • Cross-section drawing to size: Spherical roller, 45 × 100 × 25 mm21309EAE4 *H* 55, EA, H, lubrication groove and holesNSK45 × 100 × 25available to orderon requestRequest a quote
  • Cross-section drawing to size: Spherical roller, 45 × 100 × 25 mm21309EAE4C3 *H* 5clearance C3, 5, EA, H, lubrication groove and holesNSK45 × 100 × 25available to orderon requestRequest a quote
  • Cross-section drawing to size: Spherical roller, 45 × 100 × 25 mm21309 CW33CW33URB45 × 100 × 25available to orderon requestRequest a quote
  • Cross-section drawing to size: Spherical roller, 45 × 100 × 25 mm21309 E/C3clearance C3SKF45 × 100 × 25available to orderon requestRequest a quote
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Details

what this bearing is, questions

About the bearing

d×D×Bsize 45 × 100 × 25mm
Cdynamic 125kN

Spherical roller bearing 21309.

C: SKF data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

Will 21309 C3 fit instead?

Same size, clearance greater than normal. C3 is used where the bearing runs hot or sits on the shaft with an interference fit. If the old bearing is not marked C3, take this one.

Can I fit another brand instead of this bearing?

Without checking, only an exact equivalent: the size, seal, clearance and design match according to the brand’s catalogue. Positions with the same geometry differ in seal, clearance or design, and each one says so in the equivalents block. Load ratings differ between manufacturers, so for a heavily loaded unit compare C.

How do I get a price and a lead time?

Press “Request a quote” and send the part number and quantity. We reply with the price, availability and delivery terms for your country.

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