KG
6904 2RS · 20 × 37 × 9

Deep groove ball · 6904 2RS

radial — mediumaxial — low, on both sides

    Drawing of 6904 2RS: ⌀20 × ⌀37 × 9 mm6904 2RS2RS
    Fig. 1: 6904 2RS, end view and section; rolling element geometry per the NSK catalogue. Dimensions in mm

    There is no photo of this product: the 3D model and drawing show the dimensions of 6904 2RS

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

    Bearing KG 6904 2RS

    Price on request
    Available to order

    Specifications

    Manufacturer number
    ISO designation
    d
    20 mm
    Bore diameter dBearing bore = shaft diameter. Source: supplier data
    D
    37 mm
    Outside diameter DOutside diameter = housing bore. Source: supplier data
    B
    9 mm
    Width BRing width. Source: supplier data
    Seal
    2RSrubber, both sides
    Clearance
    normal clearance
    C
    6.37 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
    3.65 kN
    Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
    Limiting speed
    26,000 rpm
    Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
    m
    0.037 kg
    MassWeight of the product. Source: supplier data
    01

    Equivalents

    the same size 20 × 37 × 9 from other brands

    22 products
    Series illustration (not a photo of this item): 6904 2RS
    You are viewingKG 6904 2RS

    Everything the number specifies matches: series 69, 20 × 37 × 9 mm, contact seals on both sides, normal clearance, ordinary steel, design without special letters. The codes in the number are read against the KG catalogue.

    • Series illustration (not a photo of this item): 6904 2RS6904 2RSThis bearingKG20 × 37 × 9available to orderon requestyou are here
    • Series illustration (not a photo of this item): 6904 / 61904 2RS.6904 / 61904 2RS.CT20 × 37 × 95,542 pcs€0.39
    • Series illustration (not a photo of this item): 6904 2RS6904 2RSKoyo20 × 37 × 935 pcs€8.41
    • Photo: 61904-2RS161904-2RS1SKF20 × 37 × 940 pcs€12.20
    • Series illustration (not a photo of this item): 61904 2RS61904 2RSno brand20 × 37 × 9available to orderon request
    • Series illustration (not a photo of this item): 6904 2RS6904 2RSno brand20 × 37 × 9available to orderon request
    • Series illustration (not a photo of this item): 6904 2RS6904 2RSCT20 × 37 × 9available to orderon request
    • Series illustration (not a photo of this item): 61904 2RS61904 2RSCT20 × 37 × 9available to orderon request
    • Series illustration (not a photo of this item): 6904 2NSE6904 2NSENACHI20 × 37 × 9available to orderon request
    02

    Often bought with this

    shaft snap ring Ø20, bore snap ring Ø37, seal 20×37

    4 products
    • Shaft snap ring Ø20CT SEG 20 Z by 1000Why it fits: DIN 471 snap ring for a 20 shaft: holds the inner ring on the shaft
      €22.57available to order
    • Shaft snap ring Ø20SEG 20 Z (100 pcs)Why it fits: DIN 471 snap ring for a 20 shaft: holds the inner ring on the shaft
      Price to be confirmedavailable to order
    • Bore snap ring Ø37CT SEG 37 W by 1000Why it fits: DIN 472 snap ring for a 37 bore: holds the outer ring in the housing
      €37.46out of stock
    • Seal 20×37JULU 020-37-7 TCWhy it fits: Oil seal 20×37: shaft 20 and housing bore 37, the same as the bearing; the bearing has its own seals (2RS), and the oil seal closes the unit from outside
      €0.21300 pcs
    03

    Details

    what this bearing is, questions

    About the bearing

    D 37d 20B 9
    d×D×Bsize 20 × 37 × 9mm
    Cdynamic 6.37kN
    C0static 3.65kN
    mweight 0.037kg

    Deep groove ball bearing 6904-2RS, design 2RS: contact seals on both sides.

    C, C₀, m and limiting speed 26,000 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.

    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.

    04

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