KG
Simplified drawing of the bearing per ISO 8826-1, dimensions of 6307 ZNR: ⌀35 × ⌀80 × 21 mm⌀80⌀35216307 ZNRZ
Fig. 1: 6307 ZNR, simplified drawing per ISO 8826-1. Dimensions in mm

There is no photo of this product: the drawing shows the dimensions of 6307 ZNR

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

Bearing KG 6307 ZNR

Price on request
Available to order

Specifications

Manufacturer number
ISO designation
GOST number
d
35 mm
Bore diameter dBearing bore = shaft diameter. Source: supplier data
D
80 mm
Outside diameter DOutside diameter = housing bore. Source: supplier data
B
21 mm
Width BRing width. Source: supplier data
Seal
Zshield, one side
Clearance
normal clearance
C
35.1 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
19 kN
Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
Limiting speed
12,000 rpm
Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
m
0.46 kg
MassWeight of the product. Source: supplier data
01

Equivalents

the same size 35 × 80 × 21 from other brands

68 products
Cross-section drawing to size: Deep groove ball, 35 × 80 × 21 mm
You are viewingKG 6307 ZNR

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

  • Series illustration (not a photo of this item): 6307 2RS C36307 2RS C3contact seals on both sides, clearance C3, standard designCT35 × 80 × 21143 pcs€1.73Request a quote
  • Series illustration (not a photo of this item): 6307 2RS6307 2RScontact seals on both sides, standard designCT35 × 80 × 211,868 pcs€1.76Request a quote
  • Cross-section drawing to size: Deep groove ball, 35 × 80 × 21 mm6307 2RS Ncontact seals on both sides, groove for a snap ringCT35 × 80 × 2180 pcs€1.86Request a quote
  • Series illustration (not a photo of this item): 6307 2RSC36307 2RSC3contact seals on both sides, clearance C3, standard designNTE35 × 80 × 2140 pcs€2.66Request a quote
  • Series illustration (not a photo of this item): 6307 2RS6307 2RScontact seals on both sides, standard designNTE35 × 80 × 21638 pcs€2.76Request a quote
  • Series illustration (not a photo of this item): 6307 2RS6307 2RScontact seals on both sides, standard designKoyo35 × 80 × 2140 pcs€8.35Request a quote
  • Series illustration (not a photo of this item): 6307 2RS C36307 2RS C3contact seals on both sides, clearance C3, standard designKoyo35 × 80 × 2140 pcs€8.35Request a quote
  • Photo: 6307 2RSR C36307 2RSR C3contact seals on both sides, clearance C3, standard designFAG35 × 80 × 21260 pcs€8.61Request a quote
  • Photo: 6307 2RS6307 2RScontact seals on both sides, standard designZ&S35 × 80 × 21available to order€5.44Request a quote
  • Photo: 6307 2RSR6307 2RSRcontact seals on both sides, standard designFAG35 × 80 × 21available to order€7.80Request a quote
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Details

what this bearing is, questions

About the bearing

D 80d 35B 21
d×D×Bsize 35 × 80 × 21mm
Cdynamic 35.1kN
C0static 19kN
mweight 0.46kg

Deep groove ball bearing 6307-Z, design Z: shield on one side. Under GOST the same bearing is designated 60307.

C, C₀, m and limiting speed 12,000 rpm: KG data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

Frequently asked questions

How does 2RS differ from ZZ?

2RS has rubber seals that touch the inner ring and keep out dust and water better, which is the usual choice for field machinery. ZZ has metal shields that do not touch, allow higher speeds, and protect against dirt less well.

What is 60307?

It is the same bearing under GOST 3189-89: 6 — shield on one side, 0307 corresponds to the ISO base 6307. Size 35 × 80 × 21 mm, a full equivalent of 6307-Z.

Will 6307 Z 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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