Drawing of 31309 A: ⌀45 × ⌀100 × 27.25 mm⌀100⌀45B 25T 27.25C 18α31309 A
Fig. 1: 31309 A, end view and section; internal parts simplified per ISO 8826-1. Dimensions in mm
Bearing Z&S 31309 A — photo 1
Bearing Z&S 31309 A — photo 2
Bearing Z&S 31309 A — photo 3
Combined load at an angle (tapered, high), axial on one sideTapered roller

Bearing Z&S 31309 A

Price on request
Available to order

Specifications

Manufacturer number
ISO designation
OEM number
45 KD 13, 511.00.280
d
45 mm
Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
D
100 mm
Outside diameter DOutside diameter = housing bore. Source: two supplier sources
B
25 mm
Width BRing width. Source: supplier data
T
27.25 mm
Total width TOverall width of an assembled tapered roller bearing. Source: two supplier sources
Cup width C
18 mm
Cup width CWidth of the outer ring of a tapered roller bearing. Source: supplier data
C
91.3 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
C0
102 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
Limiting speed
4,500 rpm
Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
m
0.998 kg
MassWeight of the product. Source: supplier data
01

Equivalents

the same size 45 × 100 × 27.25 from other brands

11 products
Photo: 31309 A
You are viewingZ&S 31309 A

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

  • Series illustration (not a photo of this item): 3030930309standard designCT45 × 100 × 25100 pcs€3.37Request a quote
  • Cross-section drawing to size: Tapered roller, 45 × 100 × T 27.25 mm31309standard designCT45 × 100 × ?22 pcs€4.29Request a quote
  • Cross-section drawing to size: Tapered roller, 45 × 100 × T 27.25 mm31309standard designNTE45 × 100 × ?48 pcs€5.72Request a quote
  • Series illustration (not a photo of this item): 3030930309standard designNTE45 × 100 × 2544 pcs€5.95Request a quote
  • Photo: 30309 A30309 Adifferent series: 30309Z&S45 × 100 × 25available to order€7.78Request a quote
  • Series illustration (not a photo of this item): 3030930309standard designno brand45 × 100 × 25available to orderon requestRequest a quote
  • Series illustration (not a photo of this item): 3030930309standard designKG45 × 100 × 25available to orderon requestRequest a quote
  • Cross-section drawing to size: Tapered roller, 45 × 100 × T 27.25 mm9008745133480 30309133480, 30309: not decodedNKE45 × 100 × 25available to orderon requestRequest a quote
  • Cross-section drawing to size: Tapered roller, 45 × 100 × T 27.25 mmHR30309J 55, J, HR: not decodedNSK45 × 100 × 25available to orderon requestRequest a quote
02

Details

what this bearing is, questions

About the bearing

d×D×Tsize 45 × 100 × 27.25mm
Cdynamic 91.3kN
C0static 102kN
mweight 0.998kg

Tapered roller bearing 31309.

C, C₀, m and limiting speed 4,500 rpm: Z&S data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

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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