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6304 DDUNR · 20 × 52 × 15

Deep groove ball · 6304 DDUNR

radial — mediumaxial — low, on both sides
    Simplified drawing of the bearing per ISO 8826-1, dimensions of 6304 DDUNR: ⌀20 × ⌀52 × 15 mm⌀52⌀20156304 DDUNRDDU
    Fig. 1: 6304 DDUNR, simplified drawing per ISO 8826-1. Dimensions in mm

    There is no photo of this product: the 3D model and drawing show the dimensions of 6304 DDUNR

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

    Bearing NSK 6304 DDUNR

    Price on request
    Available to order
    Request a quoteIn the cart: send the request

    Specifications

    Manufacturer number
    ISO designation
    GOST number
    Equivalents
    2 exact, 51 approximate
    d
    20 mm
    Bore diameter dBearing bore = shaft diameter. Source: supplier data
    D
    52 mm
    Outside diameter DOutside diameter = housing bore. Source: supplier data
    B
    15 mm
    Width BRing width. Source: supplier data
    Seal
    DDUcontact seals on both sides
    Clearance
    normal clearance
    01

    Equivalents

    the same size 20 × 52 × 15 from other brands

    53 products
    Series illustration (not a photo of this item): 6304 DDUNR
    You are viewingNSK 6304 DDUNR

    Everything the number specifies matches: series 63, 20 × 52 × 15 mm, contact seals on both sides, NR, normal clearance, special design. The codes in the number are read against the NSK catalogue.

    • Series illustration (not a photo of this item): 6304 DDUNR6304 DDUNRThis bearingNSK20 × 52 × 15available to orderon requestyou are here
    • Photo: 6304 2RS NR6304 2RS NRKoyo20 × 52 × 15available to order€13.02
    02

    Often bought with this

    shaft snap ring Ø20, bore snap ring Ø52, seal 20×52

    6 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 Ø52CT SEG 52 W by 1000Why it fits: DIN 472 snap ring for a 52 bore: holds the outer ring in the housing
      €86.47available to order
    • Bore snap ring Ø52CT-RING SEG 52 W (100 pcs)Why it fits: DIN 472 snap ring for a 52 bore: holds the outer ring in the housing
      Price to be confirmedavailable to order
    • Seal 20×52JULU 020-52-10 TCWhy it fits: Oil seal 20×52: shaft 20 and housing bore 52, the same as the bearing; the bearing has its own seals (DDU), and the oil seal closes the unit from outside
      €0.392,570 pcs
    • Seal 20×52JULU 020-52-7 TCWhy it fits: Oil seal 20×52: shaft 20 and housing bore 52, the same as the bearing; the bearing has its own seals (DDU), and the oil seal closes the unit from outside
      €0.391,300 pcs
    03

    Details

    what this bearing is, questions

    Where this bearing is fitted

    7 machines3 makesby parts catalogues

    1. Belarus-152 Belarus same geometry 4 assemblies · 4 pcs per machine

      the machine has A; ours does not; ours: seals on both sides (2RS); in the machine: open; ours has groove and snap ring (NR)

      manufacturer’s catalogue: BELARUS-152. 152-0000010 KDS. Catalogue of assembly units and parts (OJSC MTZ, 2016)

    2. Gaspardo Primavera (pneumatic seed drill) Maschio Gaspardo same geometry 2 assemblies

      ours: seals on both sides (2RS); in the machine: shield on one side; ours has groove and snap ring (NR)

      manufacturer’s catalogue: maschio_primavera-2009

    3. Belarus 922.3/​922.4 Belarus same geometry 1 assembly · 2 pcs per machine

      the machine has A; ours does not; ours: seals on both sides (2RS); in the machine: open; ours has groove and snap ring (NR)

      manufacturer’s catalogue: BELARUS 922.3/​922.4. 922-0000010 KDS. Catalogue of parts and assembly units, 2013 (RUE MTZ)

    4. KhTZ-2511, KhTZ-3510 KhTZ same geometry 1 assembly · 1 pcs per machine

      ours: seals on both sides (2RS); in the machine: open; ours has groove and snap ring (NR)

      manufacturer’s catalogue: Tractors KhTZ-2511 and KhTZ-3510. Operator’s manual 2511.00.001 RE

    5. Gaspardo Nina 250/​300/​400 (mechanical seed drill) Maschio Gaspardo same geometry 1 assembly

      ours: seals on both sides (2RS); in the machine: shield on one side; ours has groove and snap ring (NR)

      manufacturer’s catalogue: maschio_nina-2015

    Number in the manufacturer’s catalogue: by GOST (180304) or ISO. “Same geometry” means size and type match; the version is not given in the catalogue.

    About the bearing

    D 52d 20B 15
    d×D×Bsize 20 × 52 × 15mm

    Deep groove ball bearing 6304-2RS, design DDU: contact seals on both sides. Under GOST the same bearing is designated 180304.

    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 180304?

    It is the same bearing under GOST 3189-89: 18 — contact seals on both sides, 0304 corresponds to the ISO base 6304. Size 20 × 52 × 15 mm, a full equivalent of 6304-2RS.

    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

    By make and unit

    this bearing is fitted in machines of these makes

    05

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