• THK SF Standard LM Shaft for Linear Bushes (Dia 3-100 mm)
1 1

THK SF Standard LM Shaft for Linear Bushes (Dia 3-100 mm)

THK SF Standard LM Shaft for Linear Bushes (Dia 3-100 mm)

THK SF standard LM shafts are induction-hardened, ground shafts made specifically for THK linear bushes, cut to the length you specify.

Key features

  • Materials SUJ2, THK5SP or SUS440C equivalent; hardness 58-64 HRC (SUS: 56 HRC min)
  • Hardened depth 0.8-2.5 mm, surface roughness Ra 0.4 or less, straightness 50 um/300 mm or less
  • Standard tolerance g6; precision g5 and h5 also available
  • Order example SF25g6-500L: length in mm; special symbols K (hollow), M (material), F (surface treatment)
  • Hollow shafts and end machining (taps, flats, threads, steps) on request

Specifications

Brand THK
Series SF
Hardness 58-64 HRC (SUJ2 / THK5SP)
Surface Ra 0.4 max
Straightness 50 um / 300 mm max
Ordering SF + dia + tolerance + -<length>L + symbol
Source THK General Catalog Guide Ball Bush / Linear Bush (Korean ed. 515-2K), p. A4-105 - A4-107, A4-118
SF3 Shaft dia: 3 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-400 mm | Availability: Standard
SF3g6 Shaft dia: 3 mm | Tolerance: g6 (standard) | Length: 20-400 mm | Availability: Standard
SF3g5 Shaft dia: 3 mm | Tolerance: g5 (precision) | Length: 20-400 mm | Availability: Standard
SF3h5 Shaft dia: 3 mm | Tolerance: h5 (precision) | Length: 20-400 mm | Availability: Standard
SF4 Shaft dia: 4 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-400 mm | Availability: Standard
SF4g6 Shaft dia: 4 mm | Tolerance: g6 (standard) | Length: 20-400 mm | Availability: Standard
SF4g5 Shaft dia: 4 mm | Tolerance: g5 (precision) | Length: 20-400 mm | Availability: Standard
SF4h5 Shaft dia: 4 mm | Tolerance: h5 (precision) | Length: 20-400 mm | Availability: Standard
SF5 Shaft dia: 5 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-500 mm | Availability: Standard
SF5g6 Shaft dia: 5 mm | Tolerance: g6 (standard) | Length: 20-500 mm | Availability: Standard
SF5g5 Shaft dia: 5 mm | Tolerance: g5 (precision) | Length: 20-500 mm | Availability: Standard
SF5h5 Shaft dia: 5 mm | Tolerance: h5 (precision) | Length: 20-500 mm | Availability: Standard
SF6 Shaft dia: 6 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-1500 mm | Availability: Standard
SF6g6 Shaft dia: 6 mm | Tolerance: g6 (standard) | Length: 20-1500 mm | Availability: Standard
SF6g5 Shaft dia: 6 mm | Tolerance: g5 (precision) | Length: 20-1500 mm | Availability: Standard
SF6h5 Shaft dia: 6 mm | Tolerance: h5 (precision) | Length: 20-1500 mm | Availability: Standard
SF8 Shaft dia: 8 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-1500 mm | Availability: Standard
SF8g6 Shaft dia: 8 mm | Tolerance: g6 (standard) | Length: 20-1500 mm | Availability: Standard
SF8g5 Shaft dia: 8 mm | Tolerance: g5 (precision) | Length: 20-1500 mm | Availability: Standard
SF8h5 Shaft dia: 8 mm | Tolerance: h5 (precision) | Length: 20-1500 mm | Availability: Standard
SF10 Shaft dia: 10 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 30-1500 mm | Availability: Standard
SF10g6 Shaft dia: 10 mm | Tolerance: g6 (standard) | Length: 30-1500 mm | Availability: Standard
SF10g5 Shaft dia: 10 mm | Tolerance: g5 (precision) | Length: 30-1500 mm | Availability: Standard
SF10h5 Shaft dia: 10 mm | Tolerance: h5 (precision) | Length: 30-1500 mm | Availability: Standard
SF12 Shaft dia: 12 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 30-1500 mm | Availability: Standard
SF12g6 Shaft dia: 12 mm | Tolerance: g6 (standard) | Length: 30-1500 mm | Availability: Standard
SF12g5 Shaft dia: 12 mm | Tolerance: g5 (precision) | Length: 30-1500 mm | Availability: Standard
SF12h5 Shaft dia: 12 mm | Tolerance: h5 (precision) | Length: 30-1500 mm | Availability: Standard
SF13 Shaft dia: 13 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 30-1500 mm | Availability: Standard
SF13g6 Shaft dia: 13 mm | Tolerance: g6 (standard) | Length: 30-1500 mm | Availability: Standard
SF13g5 Shaft dia: 13 mm | Tolerance: g5 (precision) | Length: 30-1500 mm | Availability: Standard
SF13h5 Shaft dia: 13 mm | Tolerance: h5 (precision) | Length: 30-1500 mm | Availability: Standard
SF16 Shaft dia: 16 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 40-3000 mm | Availability: Standard
SF16g6 Shaft dia: 16 mm | Tolerance: g6 (standard) | Length: 40-3000 mm | Availability: Standard
SF16g5 Shaft dia: 16 mm | Tolerance: g5 (precision) | Length: 40-3000 mm | Availability: Standard
SF16h5 Shaft dia: 16 mm | Tolerance: h5 (precision) | Length: 40-3000 mm | Availability: Standard
SF20 Shaft dia: 20 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 40-3000 mm | Availability: Standard
SF20g6 Shaft dia: 20 mm | Tolerance: g6 (standard) | Length: 40-3000 mm | Availability: Standard
SF20g5 Shaft dia: 20 mm | Tolerance: g5 (precision) | Length: 40-3000 mm | Availability: Standard
SF20h5 Shaft dia: 20 mm | Tolerance: h5 (precision) | Length: 40-3000 mm | Availability: Standard
SF25 Shaft dia: 25 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 50-3000 mm | Availability: Standard
SF25g6 Shaft dia: 25 mm | Tolerance: g6 (standard) | Length: 50-3000 mm | Availability: Standard
SF25g5 Shaft dia: 25 mm | Tolerance: g5 (precision) | Length: 50-3000 mm | Availability: Standard
SF25h5 Shaft dia: 25 mm | Tolerance: h5 (precision) | Length: 50-3000 mm | Availability: Standard
SF30 Shaft dia: 30 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 60-3000 mm | Availability: Standard
SF30g6 Shaft dia: 30 mm | Tolerance: g6 (standard) | Length: 60-3000 mm | Availability: Standard
SF30g5 Shaft dia: 30 mm | Tolerance: g5 (precision) | Length: 60-3000 mm | Availability: Standard
SF30h5 Shaft dia: 30 mm | Tolerance: h5 (precision) | Length: 60-3000 mm | Availability: Standard
SF35 Shaft dia: 35 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 70-3000 mm | Availability: Standard
SF35g6 Shaft dia: 35 mm | Tolerance: g6 (standard) | Length: 70-3000 mm | Availability: Standard
SF35g5 Shaft dia: 35 mm | Tolerance: g5 (precision) | Length: 70-3000 mm | Availability: Standard
SF35h5 Shaft dia: 35 mm | Tolerance: h5 (precision) | Length: 70-3000 mm | Availability: Standard
SF38 Shaft dia: 38 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 100-3000 mm | Availability: Made to order
SF38g6 Shaft dia: 38 mm | Tolerance: g6 (standard) | Length: 100-3000 mm | Availability: Made to order
SF38g5 Shaft dia: 38 mm | Tolerance: g5 (precision) | Length: 100-3000 mm | Availability: Made to order
SF38h5 Shaft dia: 38 mm | Tolerance: h5 (precision) | Length: 100-3000 mm | Availability: Made to order
SF40 Shaft dia: 40 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 100-3000 mm | Availability: Standard
SF40g6 Shaft dia: 40 mm | Tolerance: g6 (standard) | Length: 100-3000 mm | Availability: Standard
SF40g5 Shaft dia: 40 mm | Tolerance: g5 (precision) | Length: 100-3000 mm | Availability: Standard
SF40h5 Shaft dia: 40 mm | Tolerance: h5 (precision) | Length: 100-3000 mm | Availability: Standard
SF50 Shaft dia: 50 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 100-3000 mm | Availability: Standard
SF50g6 Shaft dia: 50 mm | Tolerance: g6 (standard) | Length: 100-3000 mm | Availability: Standard
SF50g5 Shaft dia: 50 mm | Tolerance: g5 (precision) | Length: 100-3000 mm | Availability: Standard
SF50h5 Shaft dia: 50 mm | Tolerance: h5 (precision) | Length: 100-3000 mm | Availability: Standard
SF60 Shaft dia: 60 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 200-3000 mm | Availability: Made to order
SF60g6 Shaft dia: 60 mm | Tolerance: g6 (standard) | Length: 200-3000 mm | Availability: Made to order
SF60g5 Shaft dia: 60 mm | Tolerance: g5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF60h5 Shaft dia: 60 mm | Tolerance: h5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF80 Shaft dia: 80 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 200-3000 mm | Availability: Made to order
SF80g6 Shaft dia: 80 mm | Tolerance: g6 (standard) | Length: 200-3000 mm | Availability: Made to order
SF80g5 Shaft dia: 80 mm | Tolerance: g5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF80h5 Shaft dia: 80 mm | Tolerance: h5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF100 Shaft dia: 100 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 200-3000 mm | Availability: Made to order
SF100g6 Shaft dia: 100 mm | Tolerance: g6 (standard) | Length: 200-3000 mm | Availability: Made to order
SF100g5 Shaft dia: 100 mm | Tolerance: g5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF100h5 Shaft dia: 100 mm | Tolerance: h5 (precision) | Length: 200-3000 mm | Availability: Made to order
Linear Motion AccessoriesTHK
76 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
RFQ List 0 Email about this

Need a different model, or a part not listed here? Send us your parts list →

THK SF Standard LM Shaft for Linear Bushes (Dia 3-100 mm)

Brand THK·Linear Motion Accessories

Available part numbers (76)

SF3, SF3g6, SF3g5, SF3h5, SF4, SF4g6, SF4g5, SF4h5, SF5, SF5g6 + 66 more — see full table ↓

How to order

Send the THK part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

RFQ List 0 →
View full details
Product codes & specifications
0 selected
RFQ List (0)
Product codeSpec
SF3Shaft dia: 3 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-400 mm | Availability: Standard
SF3g6Shaft dia: 3 mm | Tolerance: g6 (standard) | Length: 20-400 mm | Availability: Standard
SF3g5Shaft dia: 3 mm | Tolerance: g5 (precision) | Length: 20-400 mm | Availability: Standard
SF3h5Shaft dia: 3 mm | Tolerance: h5 (precision) | Length: 20-400 mm | Availability: Standard
SF4Shaft dia: 4 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-400 mm | Availability: Standard
SF4g6Shaft dia: 4 mm | Tolerance: g6 (standard) | Length: 20-400 mm | Availability: Standard
SF4g5Shaft dia: 4 mm | Tolerance: g5 (precision) | Length: 20-400 mm | Availability: Standard
SF4h5Shaft dia: 4 mm | Tolerance: h5 (precision) | Length: 20-400 mm | Availability: Standard
SF5Shaft dia: 5 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-500 mm | Availability: Standard
SF5g6Shaft dia: 5 mm | Tolerance: g6 (standard) | Length: 20-500 mm | Availability: Standard
SF5g5Shaft dia: 5 mm | Tolerance: g5 (precision) | Length: 20-500 mm | Availability: Standard
SF5h5Shaft dia: 5 mm | Tolerance: h5 (precision) | Length: 20-500 mm | Availability: Standard
SF6Shaft dia: 6 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-1500 mm | Availability: Standard
SF6g6Shaft dia: 6 mm | Tolerance: g6 (standard) | Length: 20-1500 mm | Availability: Standard
SF6g5Shaft dia: 6 mm | Tolerance: g5 (precision) | Length: 20-1500 mm | Availability: Standard
SF6h5Shaft dia: 6 mm | Tolerance: h5 (precision) | Length: 20-1500 mm | Availability: Standard
SF8Shaft dia: 8 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 20-1500 mm | Availability: Standard
SF8g6Shaft dia: 8 mm | Tolerance: g6 (standard) | Length: 20-1500 mm | Availability: Standard
SF8g5Shaft dia: 8 mm | Tolerance: g5 (precision) | Length: 20-1500 mm | Availability: Standard
SF8h5Shaft dia: 8 mm | Tolerance: h5 (precision) | Length: 20-1500 mm | Availability: Standard
SF10Shaft dia: 10 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 30-1500 mm | Availability: Standard
SF10g6Shaft dia: 10 mm | Tolerance: g6 (standard) | Length: 30-1500 mm | Availability: Standard
SF10g5Shaft dia: 10 mm | Tolerance: g5 (precision) | Length: 30-1500 mm | Availability: Standard
SF10h5Shaft dia: 10 mm | Tolerance: h5 (precision) | Length: 30-1500 mm | Availability: Standard
SF12Shaft dia: 12 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 30-1500 mm | Availability: Standard
SF12g6Shaft dia: 12 mm | Tolerance: g6 (standard) | Length: 30-1500 mm | Availability: Standard
SF12g5Shaft dia: 12 mm | Tolerance: g5 (precision) | Length: 30-1500 mm | Availability: Standard
SF12h5Shaft dia: 12 mm | Tolerance: h5 (precision) | Length: 30-1500 mm | Availability: Standard
SF13Shaft dia: 13 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 30-1500 mm | Availability: Standard
SF13g6Shaft dia: 13 mm | Tolerance: g6 (standard) | Length: 30-1500 mm | Availability: Standard
SF13g5Shaft dia: 13 mm | Tolerance: g5 (precision) | Length: 30-1500 mm | Availability: Standard
SF13h5Shaft dia: 13 mm | Tolerance: h5 (precision) | Length: 30-1500 mm | Availability: Standard
SF16Shaft dia: 16 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 40-3000 mm | Availability: Standard
SF16g6Shaft dia: 16 mm | Tolerance: g6 (standard) | Length: 40-3000 mm | Availability: Standard
SF16g5Shaft dia: 16 mm | Tolerance: g5 (precision) | Length: 40-3000 mm | Availability: Standard
SF16h5Shaft dia: 16 mm | Tolerance: h5 (precision) | Length: 40-3000 mm | Availability: Standard
SF20Shaft dia: 20 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 40-3000 mm | Availability: Standard
SF20g6Shaft dia: 20 mm | Tolerance: g6 (standard) | Length: 40-3000 mm | Availability: Standard
SF20g5Shaft dia: 20 mm | Tolerance: g5 (precision) | Length: 40-3000 mm | Availability: Standard
SF20h5Shaft dia: 20 mm | Tolerance: h5 (precision) | Length: 40-3000 mm | Availability: Standard
SF25Shaft dia: 25 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 50-3000 mm | Availability: Standard
SF25g6Shaft dia: 25 mm | Tolerance: g6 (standard) | Length: 50-3000 mm | Availability: Standard
SF25g5Shaft dia: 25 mm | Tolerance: g5 (precision) | Length: 50-3000 mm | Availability: Standard
SF25h5Shaft dia: 25 mm | Tolerance: h5 (precision) | Length: 50-3000 mm | Availability: Standard
SF30Shaft dia: 30 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 60-3000 mm | Availability: Standard
SF30g6Shaft dia: 30 mm | Tolerance: g6 (standard) | Length: 60-3000 mm | Availability: Standard
SF30g5Shaft dia: 30 mm | Tolerance: g5 (precision) | Length: 60-3000 mm | Availability: Standard
SF30h5Shaft dia: 30 mm | Tolerance: h5 (precision) | Length: 60-3000 mm | Availability: Standard
SF35Shaft dia: 35 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 70-3000 mm | Availability: Standard
SF35g6Shaft dia: 35 mm | Tolerance: g6 (standard) | Length: 70-3000 mm | Availability: Standard
SF35g5Shaft dia: 35 mm | Tolerance: g5 (precision) | Length: 70-3000 mm | Availability: Standard
SF35h5Shaft dia: 35 mm | Tolerance: h5 (precision) | Length: 70-3000 mm | Availability: Standard
SF38Shaft dia: 38 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 100-3000 mm | Availability: Made to order
SF38g6Shaft dia: 38 mm | Tolerance: g6 (standard) | Length: 100-3000 mm | Availability: Made to order
SF38g5Shaft dia: 38 mm | Tolerance: g5 (precision) | Length: 100-3000 mm | Availability: Made to order
SF38h5Shaft dia: 38 mm | Tolerance: h5 (precision) | Length: 100-3000 mm | Availability: Made to order
SF40Shaft dia: 40 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 100-3000 mm | Availability: Standard
SF40g6Shaft dia: 40 mm | Tolerance: g6 (standard) | Length: 100-3000 mm | Availability: Standard
SF40g5Shaft dia: 40 mm | Tolerance: g5 (precision) | Length: 100-3000 mm | Availability: Standard
SF40h5Shaft dia: 40 mm | Tolerance: h5 (precision) | Length: 100-3000 mm | Availability: Standard
SF50Shaft dia: 50 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 100-3000 mm | Availability: Standard
SF50g6Shaft dia: 50 mm | Tolerance: g6 (standard) | Length: 100-3000 mm | Availability: Standard
SF50g5Shaft dia: 50 mm | Tolerance: g5 (precision) | Length: 100-3000 mm | Availability: Standard
SF50h5Shaft dia: 50 mm | Tolerance: h5 (precision) | Length: 100-3000 mm | Availability: Standard
SF60Shaft dia: 60 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 200-3000 mm | Availability: Made to order
SF60g6Shaft dia: 60 mm | Tolerance: g6 (standard) | Length: 200-3000 mm | Availability: Made to order
SF60g5Shaft dia: 60 mm | Tolerance: g5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF60h5Shaft dia: 60 mm | Tolerance: h5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF80Shaft dia: 80 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 200-3000 mm | Availability: Made to order
SF80g6Shaft dia: 80 mm | Tolerance: g6 (standard) | Length: 200-3000 mm | Availability: Made to order
SF80g5Shaft dia: 80 mm | Tolerance: g5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF80h5Shaft dia: 80 mm | Tolerance: h5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF100Shaft dia: 100 mm | Tolerance: Specify (g6 std; g5, h5) | Length: 200-3000 mm | Availability: Made to order
SF100g6Shaft dia: 100 mm | Tolerance: g6 (standard) | Length: 200-3000 mm | Availability: Made to order
SF100g5Shaft dia: 100 mm | Tolerance: g5 (precision) | Length: 200-3000 mm | Availability: Made to order
SF100h5Shaft dia: 100 mm | Tolerance: h5 (precision) | Length: 200-3000 mm | Availability: Made to order

Need a different model, or a part not listed here? Send us your parts list →

Related products

All Linear Motion & Bearings →