• THK LTR-A Rotary Ball Spline Compact Type (Support Bearing Unit, LTR8A~40A)
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THK LTR-A Rotary Ball Spline Compact Type (Support Bearing Unit, LTR8A~40A)

THK LTR-A Rotary Ball Spline Compact Type (Support Bearing Unit, LTR8A~40A)

Rotary Ball Spline compact type with integrated support bearing (LTR-A).

Key features

  • Shorter overall length than standard LTR type
  • Enables simultaneous rotary and linear motion
  • Spline shaft diameters d1: 3.4~9mm, nut OD: φ32~100mm. 4-circuit (LTR8A/10A) or 6-circuit ball arrangement
  • Standard and K-type (reverse flange) variants
  • Dust-proof options available (UU/ZZ)
  • Spline shaft length specified on order

Specifications

Type Rotary Ball Spline Compact Type with Support Bearing
Mount Flange (standard / reverse K option)
Dust Proof UU / ZZ options available
Shaft Length Specify on order (+L suffix)
LTR8A THK Rotary Ball Spline LTR-A compact, shaft d1=3.4mm, nut OD φ32mm | Spline Shaft Dia.: d1=3.4mm | Nut OD: D=32mm | Spline Bore Dia.: D0=8mm (h7) | Nut Length: L=25mm | Ball Circuits: 4 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR10A THK Rotary Ball Spline LTR-A compact, shaft d1=3.4mm, nut OD φ36mm | Spline Shaft Dia.: d1=3.4mm | Nut OD: D=36mm | Spline Bore Dia.: D0=10mm (h7) | Nut Length: L=33mm | Ball Circuits: 4 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR16A THK Rotary Ball Spline LTR-A compact, shaft d1=4.5mm, nut OD φ48mm | Spline Shaft Dia.: d1=4.5mm | Nut OD: D=48mm | Spline Bore Dia.: D0=16mm (h7) | Nut Length: L=50mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR20A THK Rotary Ball Spline LTR-A compact, shaft d1=4.5mm, nut OD φ56mm | Spline Shaft Dia.: d1=4.5mm | Nut OD: D=56mm | Spline Bore Dia.: D0=20mm (h7) | Nut Length: L=63mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR25A THK Rotary Ball Spline LTR-A compact, shaft d1=5.5mm, nut OD φ66mm | Spline Shaft Dia.: d1=5.5mm | Nut OD: D=66mm | Spline Bore Dia.: D0=25mm (h7) | Nut Length: L=71mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR32A THK Rotary Ball Spline LTR-A compact, shaft d1=6.6mm, nut OD φ78mm | Spline Shaft Dia.: d1=6.6mm | Nut OD: D=78mm | Spline Bore Dia.: D0=32mm (h7) | Nut Length: L=80mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR40A THK Rotary Ball Spline LTR-A compact, shaft d1=9mm, nut OD φ100mm | Spline Shaft Dia.: d1=9mm | Nut OD: D=100mm | Spline Bore Dia.: D0=40mm (h7) | Nut Length: L=100mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
Ball SplinesTHK
7 product codes available in this family
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THK LTR-A Rotary Ball Spline Compact Type (Support Bearing Unit, LTR8A~40A)

Brand THK·Ball Splines

Available part numbers (7)

LTR8A, LTR10A, LTR16A, LTR20A, LTR25A, LTR32A, LTR40A

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.

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Product codes & specifications
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Product codeSpec
LTR8ATHK Rotary Ball Spline LTR-A compact, shaft d1=3.4mm, nut OD φ32mm | Spline Shaft Dia.: d1=3.4mm | Nut OD: D=32mm | Spline Bore Dia.: D0=8mm (h7) | Nut Length: L=25mm | Ball Circuits: 4 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR10ATHK Rotary Ball Spline LTR-A compact, shaft d1=3.4mm, nut OD φ36mm | Spline Shaft Dia.: d1=3.4mm | Nut OD: D=36mm | Spline Bore Dia.: D0=10mm (h7) | Nut Length: L=33mm | Ball Circuits: 4 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR16ATHK Rotary Ball Spline LTR-A compact, shaft d1=4.5mm, nut OD φ48mm | Spline Shaft Dia.: d1=4.5mm | Nut OD: D=48mm | Spline Bore Dia.: D0=16mm (h7) | Nut Length: L=50mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR20ATHK Rotary Ball Spline LTR-A compact, shaft d1=4.5mm, nut OD φ56mm | Spline Shaft Dia.: d1=4.5mm | Nut OD: D=56mm | Spline Bore Dia.: D0=20mm (h7) | Nut Length: L=63mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR25ATHK Rotary Ball Spline LTR-A compact, shaft d1=5.5mm, nut OD φ66mm | Spline Shaft Dia.: d1=5.5mm | Nut OD: D=66mm | Spline Bore Dia.: D0=25mm (h7) | Nut Length: L=71mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR32ATHK Rotary Ball Spline LTR-A compact, shaft d1=6.6mm, nut OD φ78mm | Spline Shaft Dia.: d1=6.6mm | Nut OD: D=78mm | Spline Bore Dia.: D0=32mm (h7) | Nut Length: L=80mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)
LTR40ATHK Rotary Ball Spline LTR-A compact, shaft d1=9mm, nut OD φ100mm | Spline Shaft Dia.: d1=9mm | Nut OD: D=100mm | Spline Bore Dia.: D0=40mm (h7) | Nut Length: L=100mm | Ball Circuits: 6 | Type: Rotary Ball Spline Compact Type with Support Bearing | Mount: Flange (standard / reverse K option) | Dust Proof: UU / ZZ options available | Shaft Length: Specify on order (+L suffix)

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