KG
6909 ZZ · 45 × 68 × 12

Deep groove ball · 6909 ZZ

radial — mediumaxial — low, on both sides

    Drawing of 6909 ZZ: ⌀45 × ⌀68 × 12 mm6909 ZZZZ
    Fig. 1: 6909 ZZ, 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 6909 ZZ

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

    Bearing KG 6909 ZZ

    Price on request
    Available to order

    Specifications

    Manufacturer number
    ISO designation
    d
    45 mm
    Bore diameter dBearing bore = shaft diameter. Source: supplier data
    D
    68 mm
    Outside diameter DOutside diameter = housing bore. Source: supplier data
    B
    12 mm
    Width BRing width. Source: supplier data
    Seal
    ZZshields, both sides
    Clearance
    normal clearance
    C
    14 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
    10.8 kN
    Basic static load rating C0Permissible load without rotation and under shock; ISO 76 method, manufacturer’s figure. Source: supplier data
    Limiting speed
    13,000 rpm
    Limiting speedMechanical limit; depends on the seal (SKF 6200: 36,000 open, 17,000 with 2RSH). Source: supplier data
    m
    0.14 kg
    MassWeight of the product. Source: supplier data
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    Equivalents

    the same size 45 × 68 × 12 from other brands

    11 products
    Series illustration (not a photo of this item): 6909 ZZ
    You are viewingKG 6909 ZZ

    Everything the number specifies matches: series 69, 45 × 68 × 12 mm, metal shields 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): 6909 ZZ6909 ZZThis bearingKG45 × 68 × 12available to orderon requestyou are here
    • Series illustration (not a photo of this item): 6909 / 61909 ZZ6909 / 61909 ZZCT45 × 68 × 1249 pcs€1.60
    • Series illustration (not a photo of this item): 6909 ZZ6909 ZZno brand45 × 68 × 12available to orderon request
    • Series illustration (not a photo of this item): 6909 ZZ6909 ZZCT45 × 68 × 12available to orderon request
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    Often bought with this

    shaft snap ring Ø45, bore snap ring Ø68, seal 45×68

    4 products
    • Shaft snap ring Ø45CT SEG 45 Z by 1000Why it fits: DIN 471 snap ring for a 45 shaft: holds the inner ring on the shaft
      €77.63available to order
    • Bore snap ring Ø68CT SEG 68 W by 100Why it fits: DIN 472 snap ring for a 68 bore: holds the outer ring in the housing
      €16.07available to order
    • Seal 45×68JULU 045-68-10 TCWhy it fits: Oil seal 45×68: shaft 45 and housing bore 68, the same as the bearing; the bearing has its own seals (ZZ), and the oil seal closes the unit from outside
      €0.40available to order
    • Seal 45×68Dichtomatik Uszczelka 45x68x10Why it fits: Oil seal 45×68: shaft 45 and housing bore 68, the same as the bearing; the bearing has its own seals (ZZ), and the oil seal closes the unit from outside
      Price to be confirmedavailable to order
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    Details

    what this bearing is, questions

    About the bearing

    D 68d 45B 12
    d×D×Bsize 45 × 68 × 12mm
    Cdynamic 14kN
    C0static 10.8kN
    mweight 0.14kg

    Deep groove ball bearing 6909-ZZ, design ZZ: metal shields on both sides.

    C, C₀, m and limiting speed 13,000 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.

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