• THK RNAST Roller Follower (Separable, No Inner Ring, dr 7-60)
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THK RNAST Roller Follower (Separable, No Inner Ring, dr 7-60)

THK RNAST Roller Follower (Separable, No Inner Ring, dr 7-60)

THK RNAST roller followers are separable track rollers without an inner ring, running directly on a hardened shaft for compact designs.

Key features

  • Thick-walled outer ring withstands impact loads as a track roller
  • Needle rollers give high load capacity in a compact section
  • Separable type without inner ring; the shaft acts as the inner raceway
  • Options: stainless steel (M), spherical outer ring (R)
  • RNAST45 available in carbon steel only

Specifications

Brand THK
Series RNAST
Rolling elements Needle rollers
Lubrication Pre-packed with grease
Code format RNAST25 M R
Source THK General Catalog Roller Follower (Korean ed. 515-2K), p. A20-12-A20-16
RNAST5 Size: dr 7 x D 16 x C 7.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 2.74/2.39 kN
RNAST5 R Size: dr 7 x D 16 x C 7.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 2.74/2.39 kN
RNAST5 M Size: dr 7 x D 16 x C 7.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 2.74/2.39 kN
RNAST5 M R Size: dr 7 x D 16 x C 7.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 2.74/2.39 kN
RNAST6 Size: dr 10 x D 19 x C 9.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 4.12/4.55 kN
RNAST6 R Size: dr 10 x D 19 x C 9.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 4.12/4.55 kN
RNAST6 M Size: dr 10 x D 19 x C 9.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 4.12/4.55 kN
RNAST6 M R Size: dr 10 x D 19 x C 9.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 4.12/4.55 kN
RNAST8 Size: dr 12 x D 24 x C 9.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 5.68/5.89 kN
RNAST8 R Size: dr 12 x D 24 x C 9.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 5.68/5.89 kN
RNAST8 M Size: dr 12 x D 24 x C 9.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 5.68/5.89 kN
RNAST8 M R Size: dr 12 x D 24 x C 9.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 5.68/5.89 kN
RNAST10 Size: dr 14 x D 30 x C 11.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 9.7/9.67 kN
RNAST10 R Size: dr 14 x D 30 x C 11.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 9.7/9.67 kN
RNAST10 M Size: dr 14 x D 30 x C 11.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 9.7/9.67 kN
RNAST10 M R Size: dr 14 x D 30 x C 11.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 9.7/9.67 kN
RNAST12 Size: dr 16 x D 32 x C 11.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 10.4/10.9 kN
RNAST12 R Size: dr 16 x D 32 x C 11.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 10.4/10.9 kN
RNAST12 M Size: dr 16 x D 32 x C 11.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 10.4/10.9 kN
RNAST12 M R Size: dr 16 x D 32 x C 11.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 10.4/10.9 kN
RNAST15 Size: dr 20 x D 35 x C 11.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 12.3/14.3 kN
RNAST15 R Size: dr 20 x D 35 x C 11.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 12.3/14.3 kN
RNAST15 M Size: dr 20 x D 35 x C 11.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 12.3/14.3 kN
RNAST15 M R Size: dr 20 x D 35 x C 11.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 12.3/14.3 kN
RNAST17 Size: dr 22 x D 40 x C 15.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 17.4/20.9 kN
RNAST17 R Size: dr 22 x D 40 x C 15.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 17.4/20.9 kN
RNAST17 M Size: dr 22 x D 40 x C 15.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 17.4/20.9 kN
RNAST17 M R Size: dr 22 x D 40 x C 15.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 17.4/20.9 kN
RNAST20 Size: dr 25 x D 47 x C 15.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 19.2/24.5 kN
RNAST20 R Size: dr 25 x D 47 x C 15.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 19.2/24.5 kN
RNAST20 M Size: dr 25 x D 47 x C 15.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 19.2/24.5 kN
RNAST20 M R Size: dr 25 x D 47 x C 15.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 19.2/24.5 kN
RNAST25 Size: dr 30 x D 52 x C 15.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 20.7/28.4 kN
RNAST25 R Size: dr 30 x D 52 x C 15.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 20.7/28.4 kN
RNAST25 M Size: dr 30 x D 52 x C 15.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 20.7/28.4 kN
RNAST25 M R Size: dr 30 x D 52 x C 15.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 20.7/28.4 kN
RNAST30 Size: dr 38 x D 62 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 30.3/45.4 kN
RNAST30 R Size: dr 38 x D 62 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 30.3/45.4 kN
RNAST30 M Size: dr 38 x D 62 x C 19.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 30.3/45.4 kN
RNAST30 M R Size: dr 38 x D 62 x C 19.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 30.3/45.4 kN
RNAST35 Size: dr 42 x D 72 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 32.2/50.6 kN
RNAST35 R Size: dr 42 x D 72 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 32.2/50.6 kN
RNAST35 M Size: dr 42 x D 72 x C 19.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 32.2/50.6 kN
RNAST35 M R Size: dr 42 x D 72 x C 19.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 32.2/50.6 kN
RNAST40 Size: dr 50 x D 80 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 35.7/61.6 kN
RNAST40 R Size: dr 50 x D 80 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 35.7/61.6 kN
RNAST40 M Size: dr 50 x D 80 x C 19.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 35.7/61.6 kN
RNAST40 M R Size: dr 50 x D 80 x C 19.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 35.7/61.6 kN
RNAST45 Size: dr 55 x D 85 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 37.1/66.4 kN
RNAST45 R Size: dr 55 x D 85 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 37.1/66.4 kN
RNAST50 Size: dr 60 x D 90 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 38.7/71.8 kN
RNAST50 R Size: dr 60 x D 90 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 38.7/71.8 kN
RNAST50 M Size: dr 60 x D 90 x C 19.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 38.7/71.8 kN
RNAST50 M R Size: dr 60 x D 90 x C 19.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 38.7/71.8 kN
Roller FollowersTHK
54 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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THK RNAST Roller Follower (Separable, No Inner Ring, dr 7-60)

Brand THK·Roller Followers

Available part numbers (54)

RNAST5, RNAST5 R, RNAST5 M, RNAST5 M R, RNAST6, RNAST6 R, RNAST6 M, RNAST6 M R, RNAST8, RNAST8 R + 44 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.

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Product codes & specifications
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Product codeSpec
RNAST5Size: dr 7 x D 16 x C 7.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 2.74/2.39 kN
RNAST5 RSize: dr 7 x D 16 x C 7.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 2.74/2.39 kN
RNAST5 MSize: dr 7 x D 16 x C 7.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 2.74/2.39 kN
RNAST5 M RSize: dr 7 x D 16 x C 7.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 2.74/2.39 kN
RNAST6Size: dr 10 x D 19 x C 9.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 4.12/4.55 kN
RNAST6 RSize: dr 10 x D 19 x C 9.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 4.12/4.55 kN
RNAST6 MSize: dr 10 x D 19 x C 9.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 4.12/4.55 kN
RNAST6 M RSize: dr 10 x D 19 x C 9.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 4.12/4.55 kN
RNAST8Size: dr 12 x D 24 x C 9.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 5.68/5.89 kN
RNAST8 RSize: dr 12 x D 24 x C 9.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 5.68/5.89 kN
RNAST8 MSize: dr 12 x D 24 x C 9.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 5.68/5.89 kN
RNAST8 M RSize: dr 12 x D 24 x C 9.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 5.68/5.89 kN
RNAST10Size: dr 14 x D 30 x C 11.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 9.7/9.67 kN
RNAST10 RSize: dr 14 x D 30 x C 11.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 9.7/9.67 kN
RNAST10 MSize: dr 14 x D 30 x C 11.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 9.7/9.67 kN
RNAST10 M RSize: dr 14 x D 30 x C 11.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 9.7/9.67 kN
RNAST12Size: dr 16 x D 32 x C 11.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 10.4/10.9 kN
RNAST12 RSize: dr 16 x D 32 x C 11.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 10.4/10.9 kN
RNAST12 MSize: dr 16 x D 32 x C 11.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 10.4/10.9 kN
RNAST12 M RSize: dr 16 x D 32 x C 11.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 10.4/10.9 kN
RNAST15Size: dr 20 x D 35 x C 11.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 12.3/14.3 kN
RNAST15 RSize: dr 20 x D 35 x C 11.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 12.3/14.3 kN
RNAST15 MSize: dr 20 x D 35 x C 11.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 12.3/14.3 kN
RNAST15 M RSize: dr 20 x D 35 x C 11.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 12.3/14.3 kN
RNAST17Size: dr 22 x D 40 x C 15.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 17.4/20.9 kN
RNAST17 RSize: dr 22 x D 40 x C 15.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 17.4/20.9 kN
RNAST17 MSize: dr 22 x D 40 x C 15.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 17.4/20.9 kN
RNAST17 M RSize: dr 22 x D 40 x C 15.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 17.4/20.9 kN
RNAST20Size: dr 25 x D 47 x C 15.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 19.2/24.5 kN
RNAST20 RSize: dr 25 x D 47 x C 15.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 19.2/24.5 kN
RNAST20 MSize: dr 25 x D 47 x C 15.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 19.2/24.5 kN
RNAST20 M RSize: dr 25 x D 47 x C 15.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 19.2/24.5 kN
RNAST25Size: dr 30 x D 52 x C 15.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 20.7/28.4 kN
RNAST25 RSize: dr 30 x D 52 x C 15.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 20.7/28.4 kN
RNAST25 MSize: dr 30 x D 52 x C 15.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 20.7/28.4 kN
RNAST25 M RSize: dr 30 x D 52 x C 15.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 20.7/28.4 kN
RNAST30Size: dr 38 x D 62 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 30.3/45.4 kN
RNAST30 RSize: dr 38 x D 62 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 30.3/45.4 kN
RNAST30 MSize: dr 38 x D 62 x C 19.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 30.3/45.4 kN
RNAST30 M RSize: dr 38 x D 62 x C 19.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 30.3/45.4 kN
RNAST35Size: dr 42 x D 72 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 32.2/50.6 kN
RNAST35 RSize: dr 42 x D 72 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 32.2/50.6 kN
RNAST35 MSize: dr 42 x D 72 x C 19.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 32.2/50.6 kN
RNAST35 M RSize: dr 42 x D 72 x C 19.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 32.2/50.6 kN
RNAST40Size: dr 50 x D 80 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 35.7/61.6 kN
RNAST40 RSize: dr 50 x D 80 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 35.7/61.6 kN
RNAST40 MSize: dr 50 x D 80 x C 19.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 35.7/61.6 kN
RNAST40 M RSize: dr 50 x D 80 x C 19.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 35.7/61.6 kN
RNAST45Size: dr 55 x D 85 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 37.1/66.4 kN
RNAST45 RSize: dr 55 x D 85 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 37.1/66.4 kN
RNAST50Size: dr 60 x D 90 x C 19.8 mm | Material: Carbon steel | Outer ring: Cylindrical | C/C0: 38.7/71.8 kN
RNAST50 RSize: dr 60 x D 90 x C 19.8 mm | Material: Carbon steel | Outer ring: Spherical (R) | C/C0: 38.7/71.8 kN
RNAST50 MSize: dr 60 x D 90 x C 19.8 mm | Material: Stainless (M) | Outer ring: Cylindrical | C/C0: 38.7/71.8 kN
RNAST50 M RSize: dr 60 x D 90 x C 19.8 mm | Material: Stainless (M) | Outer ring: Spherical (R) | C/C0: 38.7/71.8 kN

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