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61808 ZZ · 40 × 52 × 7

Deep groove ball · 61808 ZZ

radial — mediumaxial — low, on both sides
    Drawing of 61808 ZZ: ⌀40 × ⌀52 × 7 mm61808 ZZZZ
    Fig. 1: 61808 ZZ, end view and section; rolling element geometry per the NSK catalogue. Dimensions in mm
    Bearing Z&S 61808 ZZ — photo 1
    Bearing Z&S 61808 ZZ — photo 2
    Load: radial medium; axial low, on both sidesDeep groove ball

    Bearing Z&S 61808 ZZ

    €3.44per piece incl. VAT
    Available to orderThe manager confirms the lead time
    In the cart

    Specifications

    Manufacturer number
    ISO designation
    Equivalents
    4 exact, 5 approximate
    d
    40 mm
    Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
    D
    52 mm
    Outside diameter DOutside diameter = housing bore. Source: two supplier sources
    B
    7 mm
    Width BRing width. Source: two supplier sources
    Seal
    ZZshields, both sides
    Clearance
    normal clearance
    C
    4.94 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
    3.45 kN
    Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
    Limiting speed
    14,000 rpm
    Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
    m
    0.029 kg
    MassWeight of the product. Source: supplier data
    01

    Equivalents

    the same size 40 × 52 × 7 from other brands

    9 products
    Photo: 61808 ZZ
    You are viewingZ&S 61808 ZZ
    €3.44baseline for the price comparison

    Everything the number specifies matches: series 618, 40 × 52 × 7 mm, metal shields on both sides, normal clearance, ordinary steel, design without special letters. The codes in the number are read against the Z&S catalogue.

    • Photo: 61808 ZZ61808 ZZThis bearingZ&S40 × 52 × 7available to order€3.44you are here
    • Series illustration (not a photo of this item): 6808 / 61808 ZZ6808 / 61808 ZZCT40 × 52 × 7600 pcs€0.71−€2.73
    • Series illustration (not a photo of this item): 61808 ZZ61808 ZZno brand40 × 52 × 7available to orderon request
    • Series illustration (not a photo of this item): 61808 ZZ61808 ZZCT40 × 52 × 7available to orderon request

    Under the price: the difference from the price of this bearing (€3.44).
    02

    Often bought with this

    shaft snap ring Ø40, bore snap ring Ø52, seal 40×52

    6 products
    • Shaft snap ring Ø40CT SEG 40 Z by 1000Why it fits: DIN 471 snap ring for a 40 shaft: holds the inner ring on the shaft
      €54.16available to order
    • Shaft snap ring Ø40SEG 40 Z (100 pcs)Why it fits: DIN 471 snap ring for a 40 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 40×52JULU 040-52-10 TCWhy it fits: Oil seal 40×52: shaft 40 and housing bore 52, the same as the bearing; the bearing has its own seals (ZZ), and the oil seal closes the unit from outside
      €0.35190 pcs
    • Seal 40×52JULU 040-52-7 TCWhy it fits: Oil seal 40×52: shaft 40 and housing bore 52, the same as the bearing; the bearing has its own seals (ZZ), and the oil seal closes the unit from outside
      €0.35available to order
    03

    Details

    what this bearing is, questions

    About the bearing

    D 52d 40B 7
    d×D×Bsize 40 × 52 × 7mm
    Cdynamic 4.94kN
    C0static 3.45kN
    mweight 0.029kg

    Deep groove ball bearing 61808-ZZ, design ZZ: metal shields on both sides.

    C, C₀, m and limiting speed 14,000 rpm: Z&S 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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