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Simplified drawing of the bearing per ISO 8826-1, dimensions of 6308 NR: ⌀40 × ⌀90 × 23 mm⌀90⌀40236308 NR
Fig. 1: 6308 NR, simplified drawing per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 6308 NR

Load: radial medium; axial low, on both sidesDeep groove ball

Bearing 6308 NR

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Specifications

Manufacturer number
ISO designation
GOST number
Equivalents
4 exact, 77 approximate
d
40 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
90 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
23 mm
Width BRing width. Source: supplier data
Seal
open, no protection
Clearance
normal clearance
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Equivalents

the same size 40 × 90 × 23 from other brands

82 products
Series illustration (not a photo of this item): 6308 NR
You are viewing6308 NR

Everything the number specifies matches: series 63, 40 × 90 × 23 mm, open, no protection, NR, normal clearance, special design.

  • Series illustration (not a photo of this item): 6308 NR6308 NRThis bearingno brand40 × 90 × 23available to orderon requestyou are here
  • Series illustration (not a photo of this item): 6308 NR6308 NRCT40 × 90 × 2350 pcs€2.26Request a quote
  • Series illustration (not a photo of this item): 6308 NR6308 NRKG40 × 90 × 23available to orderon requestRequest a quote
  • Series illustration (not a photo of this item): 6308 NR6308 NRNTE40 × 90 × 23available to orderon requestRequest a quote
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Details

what this bearing is, questions

About the bearing

D 90d 40B 23
d×D×Bsize 40 × 90 × 23mm

Deep groove ball bearing 6308. Under GOST the same bearing is designated 308.

Frequently asked questions

What is 308?

It is the same bearing under GOST 3189-89: 308 corresponds to the ISO base 6308. Size 40 × 90 × 23 mm, a full equivalent of 6308.

Will 6308 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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