SK Series Support – Vertical T-Type Shaft Support

The SK series is our vertical T-type shaft support, made of aluminum alloy, used for fixing linear shafts to mounting bases. This series is designed for complete assembly interchangeability with mainstream SK series products. The shaft mounting area features a split design, allowing secure locking of the shaft with bolts. Compatible with SF series shafts, available in sizes from SK8 to SK50.

Key Features

  • Assembly Replacement – Direct replacement of existing same-series support bodies in customer equipment
  • Vertical T-Type Design – T-shaped structure with bottom mounting, suitable for end support or intermediate support of shafts
  • Split Locking Structure – Split design at shaft mounting area for secure bolt locking, providing firm fixation and easy assembly/disassembly
  • Aluminum Alloy Material – Lightweight design with surface treatment for corrosion resistance
  • Wide Size Range – Fits shaft diameters from 8mm to 50mm, covering mainstream application requirements

Matching an LM, SCS, SBR or SHF unit? See which brands actually build this housing family in our linear bushing interchange chart.

Pairs well with: SF linear shafts · SHF shaft supports · LM..UU bearings
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Full Specifications

SK Series Shaft Support — Dimensions

All dimensions in mm unless otherwise noted.

Dimensions(mm)
Model No. Shaft Dimension h E W L F G P B S Locking Bolt Clamping Bolt Weight(g)
SK8RFUMOTION.COM 8 20 21 42 14 32.8 6 18 32 5.5 M4 M5 24
SK10RFUMOTION.COM 10 20 21 42 14 32.8 6 18 32 5.5 M4 M5 24
SK12RFUMOTION.COM 12 23 21 42 14 37.5 6 20 32 5.5 M4 M5 30
SK13RFUMOTION.COM 13 23 21 42 14 37.5 6 20 32 5.5 M4 M5 30
SK16RFUMOTION.COM 16 27 24 48 16 44 8 25 38 5.5 M4 M5 40
SK20RFUMOTION.COM 20 31 30 60 20 51 10 30 45 6.6 M5 M6 70
SK25RFUMOTION.COM 25 35 35 70 24 60 12 38 56 6.6 M6 M6 130
SK30RFUMOTION.COM 30 42 42 84 28 70 12 44 64 9 M6 M6 180
SK35RFUMOTION.COM 35 50 49 98 32 82 15 50 74 11 M8 M10 270
SK40RFUMOTION.COM 40 60 57 114 36 96 15 60 90 11 M8 M10 420
SK50RFUMOTION.COM 50 70 63 126 40 120 18 74 100 14 M12 M12 750
SK60RFUMOTION.COM 60 80 74 148 45 136 18 90 120 14 M12 M12 1100
SK Series Support – Vertical T-Type Shaft Support Specifications

© RFU Motion. Specifications subject to change without notice.

For the latest specs, please contact us.

Custom Manufacturing Available

Standard ball screws and linear guides don't always fit your design. Here's what RFU MOTION can customize based on your drawings:

  • Shaft end machining — machined precisely to your drawing
  • Screw length — cut to your exact requirement
  • Preload — light, medium, heavy, or custom value
  • Nut type — standard flange, special shape, or non-standard mounting interface
  • Rail length — continuous cutting with end finishing (chamfer or grinding)
  • Mounting holes — special thread sizes, hole spacing, or countersunk dimensions

Send us your drawing or specs — we'll deliver exactly what you need.

📦 MOQ: 1 piece / 1 set

⏱️ Lead time: Standard custom 5-7 days | Complex custom 7-15 days | Wire cutting +2 days

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