• INA RSTO / STO Yoke Type Track Rollers without Axial Guidance
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INA RSTO / STO Yoke Type Track Rollers without Axial Guidance

INA RSTO / STO Yoke Type Track Rollers without Axial Guidance

INA yoke type track rollers RSTO (without inner ring) and STO (with inner ring), without axial guidance; thick-walled outer ring with needle roller and cage assembly.

Key features

  • Thick-walled outer ring for high radial loads on cam or track
  • Without axial guidance: axial location by adjacent parts
  • RSTO runs directly on hardened shaft; STO with inner ring
  • Crowned outer ring profile
  • Crw/C0rw = effective load ratings as track roller

Specifications

Brand INA
Product type Track Rollers
Design Yoke type, no axial guidance
Outside diameter D 16 - 90 mm
Shaft diameter (Fw for RSTO, d for STO) 6 - 60 mm
Designations listed 27
Source INA Rolling Bearings HR 1 catalogue, p. 842-842
RSTO5-TV D: 16 mm | Shaft: 7 mm | C: 7.8 mm | Crw: 2.55 kN | C0rw: 2.6 kN | m: 8.5 g
RSTO6-TV D: 19 mm | Shaft: 10 mm | C: 9.8 mm | Crw: 3.75 kN | C0rw: 4.55 kN | m: 12.5 g
STO6-TV D: 19 mm | Shaft: 6 mm | C: 9.8 mm | Crw: 3.75 kN | C0rw: 4.55 kN | m: 17 g
RSTO8-TV D: 24 mm | Shaft: 12 mm | C: 9.8 mm | Crw: 4.2 kN | C0rw: 5.5 kN | m: 21 g
STO8-TV D: 24 mm | Shaft: 8 mm | C: 9.8 mm | Crw: 4.2 kN | C0rw: 5.5 kN | m: 26 g
RSTO10 D: 30 mm | Shaft: 14 mm | C: 11.8 mm | Crw: 8.4 kN | C0rw: 9.3 kN | m: 42 g
STO10 D: 30 mm | Shaft: 10 mm | C: 11.8 mm | Crw: 8.4 kN | C0rw: 9.3 kN | m: 49 g
RSTO12 D: 32 mm | Shaft: 16 mm | C: 11.8 mm | Crw: 9 kN | C0rw: 10.3 kN | m: 49 g
STO12 D: 32 mm | Shaft: 12 mm | C: 11.8 mm | Crw: 9 kN | C0rw: 10.3 kN | m: 57 g
RSTO15 D: 35 mm | Shaft: 20 mm | C: 11.8 mm | Crw: 9.1 kN | C0rw: 10.9 kN | m: 50 g
STO15 D: 35 mm | Shaft: 15 mm | C: 11.8 mm | Crw: 9.1 kN | C0rw: 10.9 kN | m: 63 g
RSTO17 D: 40 mm | Shaft: 22 mm | C: 15.8 mm | Crw: 14.2 kN | C0rw: 17.9 kN | m: 88 g
STO17 D: 40 mm | Shaft: 17 mm | C: 15.8 mm | Crw: 14.2 kN | C0rw: 17.9 kN | m: 107 g
RSTO20 D: 47 mm | Shaft: 25 mm | C: 15.8 mm | Crw: 16.1 kN | C0rw: 21.7 kN | m: 130 g
STO20 D: 47 mm | Shaft: 20 mm | C: 15.8 mm | Crw: 16.1 kN | C0rw: 21.7 kN | m: 152 g
RSTO25 D: 52 mm | Shaft: 30 mm | C: 15.8 mm | Crw: 16.4 kN | C0rw: 23.2 kN | m: 150 g
STO25 D: 52 mm | Shaft: 25 mm | C: 15.8 mm | Crw: 16.4 kN | C0rw: 23.2 kN | m: 177 g
RSTO30 D: 62 mm | Shaft: 38 mm | C: 19.8 mm | Crw: 23.1 kN | C0rw: 35 kN | m: 255 g
STO30 D: 62 mm | Shaft: 30 mm | C: 19.8 mm | Crw: 23.1 kN | C0rw: 35 kN | m: 308 g
RSTO35 D: 72 mm | Shaft: 42 mm | C: 19.8 mm | Crw: 25 kN | C0rw: 40.5 kN | m: 375 g
STO35 D: 72 mm | Shaft: 35 mm | C: 19.8 mm | Crw: 25 kN | C0rw: 40.5 kN | m: 441 g
RSTO40 D: 80 mm | Shaft: 50 mm | C: 19.8 mm | Crw: 23.7 kN | C0rw: 39.5 kN | m: 420 g
STO40 D: 80 mm | Shaft: 40 mm | C: 19.8 mm | Crw: 23.7 kN | C0rw: 39.5 kN | m: 530 g
RSTO45 D: 85 mm | Shaft: 55 mm | C: 19.8 mm | Crw: 25 kN | C0rw: 43.5 kN | m: 453 g
STO45 D: 85 mm | Shaft: 45 mm | C: 19.8 mm | Crw: 25 kN | C0rw: 43.5 kN | m: 576 g
RSTO50 D: 90 mm | Shaft: 60 mm | C: 19.8 mm | Crw: 25.5 kN | C0rw: 46 kN | m: 481 g
STO50 D: 90 mm | Shaft: 50 mm | C: 19.8 mm | Crw: 25.5 kN | C0rw: 46 kN | m: 617 g
Track RollersINA
27 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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INA RSTO / STO Yoke Type Track Rollers without Axial Guidance

Brand INA·Track Rollers

Available part numbers (27)

RSTO5-TV, RSTO6-TV, STO6-TV, RSTO8-TV, STO8-TV, RSTO10, STO10, RSTO12, STO12, RSTO15 + 17 more — see full table ↓

How to order

Send the INA 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
RSTO5-TVD: 16 mm | Shaft: 7 mm | C: 7.8 mm | Crw: 2.55 kN | C0rw: 2.6 kN | m: 8.5 g
RSTO6-TVD: 19 mm | Shaft: 10 mm | C: 9.8 mm | Crw: 3.75 kN | C0rw: 4.55 kN | m: 12.5 g
STO6-TVD: 19 mm | Shaft: 6 mm | C: 9.8 mm | Crw: 3.75 kN | C0rw: 4.55 kN | m: 17 g
RSTO8-TVD: 24 mm | Shaft: 12 mm | C: 9.8 mm | Crw: 4.2 kN | C0rw: 5.5 kN | m: 21 g
STO8-TVD: 24 mm | Shaft: 8 mm | C: 9.8 mm | Crw: 4.2 kN | C0rw: 5.5 kN | m: 26 g
RSTO10D: 30 mm | Shaft: 14 mm | C: 11.8 mm | Crw: 8.4 kN | C0rw: 9.3 kN | m: 42 g
STO10D: 30 mm | Shaft: 10 mm | C: 11.8 mm | Crw: 8.4 kN | C0rw: 9.3 kN | m: 49 g
RSTO12D: 32 mm | Shaft: 16 mm | C: 11.8 mm | Crw: 9 kN | C0rw: 10.3 kN | m: 49 g
STO12D: 32 mm | Shaft: 12 mm | C: 11.8 mm | Crw: 9 kN | C0rw: 10.3 kN | m: 57 g
RSTO15D: 35 mm | Shaft: 20 mm | C: 11.8 mm | Crw: 9.1 kN | C0rw: 10.9 kN | m: 50 g
STO15D: 35 mm | Shaft: 15 mm | C: 11.8 mm | Crw: 9.1 kN | C0rw: 10.9 kN | m: 63 g
RSTO17D: 40 mm | Shaft: 22 mm | C: 15.8 mm | Crw: 14.2 kN | C0rw: 17.9 kN | m: 88 g
STO17D: 40 mm | Shaft: 17 mm | C: 15.8 mm | Crw: 14.2 kN | C0rw: 17.9 kN | m: 107 g
RSTO20D: 47 mm | Shaft: 25 mm | C: 15.8 mm | Crw: 16.1 kN | C0rw: 21.7 kN | m: 130 g
STO20D: 47 mm | Shaft: 20 mm | C: 15.8 mm | Crw: 16.1 kN | C0rw: 21.7 kN | m: 152 g
RSTO25D: 52 mm | Shaft: 30 mm | C: 15.8 mm | Crw: 16.4 kN | C0rw: 23.2 kN | m: 150 g
STO25D: 52 mm | Shaft: 25 mm | C: 15.8 mm | Crw: 16.4 kN | C0rw: 23.2 kN | m: 177 g
RSTO30D: 62 mm | Shaft: 38 mm | C: 19.8 mm | Crw: 23.1 kN | C0rw: 35 kN | m: 255 g
STO30D: 62 mm | Shaft: 30 mm | C: 19.8 mm | Crw: 23.1 kN | C0rw: 35 kN | m: 308 g
RSTO35D: 72 mm | Shaft: 42 mm | C: 19.8 mm | Crw: 25 kN | C0rw: 40.5 kN | m: 375 g
STO35D: 72 mm | Shaft: 35 mm | C: 19.8 mm | Crw: 25 kN | C0rw: 40.5 kN | m: 441 g
RSTO40D: 80 mm | Shaft: 50 mm | C: 19.8 mm | Crw: 23.7 kN | C0rw: 39.5 kN | m: 420 g
STO40D: 80 mm | Shaft: 40 mm | C: 19.8 mm | Crw: 23.7 kN | C0rw: 39.5 kN | m: 530 g
RSTO45D: 85 mm | Shaft: 55 mm | C: 19.8 mm | Crw: 25 kN | C0rw: 43.5 kN | m: 453 g
STO45D: 85 mm | Shaft: 45 mm | C: 19.8 mm | Crw: 25 kN | C0rw: 43.5 kN | m: 576 g
RSTO50D: 90 mm | Shaft: 60 mm | C: 19.8 mm | Crw: 25.5 kN | C0rw: 46 kN | m: 481 g
STO50D: 90 mm | Shaft: 50 mm | C: 19.8 mm | Crw: 25.5 kN | C0rw: 46 kN | m: 617 g

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