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311 A · 55 × 120 × 29

Deep groove ball · 311 A

radial — mediumaxial — low, on both sides
    Drawing of 311 A: ⌀55 × ⌀120 × 29 mm311 A
    Fig. 1: 311 A, 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 311 A

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

    Bearing SKF 311 A

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

    Specifications

    Manufacturer number
    ISO designation
    Equivalents
    0 exact, 42 approximate
    d
    55 mm
    Bore diameter dBearing bore = shaft diameter. Source: two supplier sources
    D
    120 mm
    Outside diameter DOutside diameter = housing bore. Source: two supplier sources
    B
    29 mm
    Width BRing width. Source: two supplier sources
    Seal
    open, no protection
    Clearance
    normal clearance
    m
    1.5 kg
    MassWeight of the product. Source: supplier data
    01

    Equivalents

    the same size 55 × 120 × 29 from other brands

    44 products
    Drawing: 311 A
    You are viewingSKF 311 A

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

    • Series illustration (not a photo of this item): 6311 2RS6311 2RScontact seals on both sides, standard designCT55 × 120 × 292,650 pcs€4.53
    • Series illustration (not a photo of this item): 6311 2RS6311 2RScontact seals on both sides, standard designNTE55 × 120 × 29138 pcs€10.33
    • Series illustration (not a photo of this item): 6311 2RS C36311 2RS C3contact seals on both sides, clearance C3, standard designNTE55 × 120 × 29100 pcs€10.33
    • Photo: 6311 2RSR6311 2RSRcontact seals on both sides, standard designFAG55 × 120 × 29100 pcs€29.33
    • Photo: 6311 2RSR C36311 2RSR C3contact seals on both sides, clearance C3, standard designFAG55 × 120 × 29100 pcs€29.33
    • Series illustration (not a photo of this item): 6311 2RS6311 2RScontact seals on both sides, standard designKoyo55 × 120 × 2911 pcs€35.07
    • Photo: 6311 2RS6311 2RScontact seals on both sides, standard designURB55 × 120 × 29available to order€4.50
    • Photo: 6311 2RS6311 2RScontact seals on both sides, standard designVBF55 × 120 × 29available to order€11.14
    • Photo: 6311 2RS6311 2RScontact seals on both sides, standard designZ&S55 × 120 × 29available to order€13.79
    • Photo: 6311 2RS6311 2RScontact seals on both sides, standard designCX55 × 120 × 29available to order€17.24
    02

    Often bought with this

    shaft snap ring Ø55, bore snap ring Ø120

    2 products
    • Shaft snap ring Ø55CT SEG 55 Z by1000Why it fits: DIN 471 snap ring for a 55 shaft: holds the inner ring on the shaft
      €125.77available to order
    • Bore snap ring Ø120CT SEG 120 W by 100Why it fits: DIN 472 snap ring for a 120 bore: holds the outer ring in the housing
      €65.88available to order
    03

    Details

    what this bearing is, questions

    About the bearing

    D 120d 55B 29
    d×D×Bsize 55 × 120 × 29mm
    mweight 1.5kg

    Deep groove ball bearing 311.

    M: SKF data. Another brand publishes its own figures, so compare them against that brand’s catalogue.

    Frequently asked questions

    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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