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Item # SM 12, SM Metric Type Linear Motion Bearings
List Price QUOTE


Available options:
  • Chrome or Stainless Steel
  • Steel or Resin Retainer
  • Internal Seals (UU)
  • Adjustable or Open Series
  • Slide Block Housings available in several styles



    • Unit of Measure: Metric

    Specifications  · Available Housing Types  · Bearing Dimensions

    Specifications

    (dr) Shaft Diameter
    		12 mm

    (dr) Precision Tolerance
    		0/-6 µm

    (dr) High Tolerance
    		0/-9 µm

    (D) Outer Diameter
    		21 mm

    (D) Tolerance
    		0/-13 µm

    Length
    		30 mm

    (L) Tolerance
    		0/-200 µm

    Dist. Btwn Retaining Rings
    		23 mm

    (B) Tolerance
    		0/-200 µm

    (W) Retaining Ring Width
    		1.3 mm

    (D1) Retaining Ring Diameter
    		20 mm

    (h) Dimension
    		1.5 mm

    (h1) Dimension
    		8 mm

    (C) Dynamic Load
    		42 kgf

    (Co) Static Load
    		61 kgf

    Ball Circuit
    		4

    Weight
    		42 gf

    Configuration
    		Standard Type

    Seal Type
    		No Seals

    (θ) Dimension
    		80 º

    Precision Eccentricity
    		8 µm

    High Eccentricity
    		12 µm

    Maximum Radial Clearance
    		-4 µm


    Available Housing Types

    NB TOPBALL Slide Units include a clear anodized corrosion resistant aluminum block and either one or two TOPBALL self-aligning slide bushings Closed and adjustable clearance styles incorporate machined snap ring grooves in combination with standard retaining rings for slide bush retention. The open style incorporates bottom plates and mounting screws to retain bushing in proper position. All styles are provided with standard machined reference edges for proper alignment and installation.


    Bearing Dimensions

    Different Housing Types