LINEAR TENSIONERS

LINEAR TENSIONERS

ZETASASSI® INDUSTRIAL CHAIN AND BELT  LINEAR DRIVE TENSIONERS

LINEAR DRIVE TENSIONER SPRING-ACTION

AXIAL AUTOMATIC DRIVE TENSIONERS SPRING-ACTION

The linear tensioners are automatic devices that serve to maintain the correct tension of the transmission chain or belt, thereby increasing their durability.

They automatically recover any slack in the chain or belt that may develop with use, preventing the appearance of vibrations, noise and breakage due to slack.

These automatic linear tensioners do not require any kind of upkeep and make it possible to save time on maintenance and management of the machinery on which they are installed. 

The linear tensioners TO—ET – TA models consist of a base in special, very sturdy, antiseize aluminum alloy with tensile strength of  440MPa that ensures perfect glide on high tensile strength galvanized steel rods, to which the chain tensioning head or shoe is fastened.They are fitted on the inside with elastic elements in steel with a very high yield point and initial preload, which makes it possible to obtain a more constant pressure excursion.In addition, the mechanical specifications of the material are such as to prevent wear on the internal elastic elements caused by movement, and to have a product of absolute excellence in this field. 

The linear tensioners KU models are equipped with PTFE type glide bushings for the movement of the rods. 

The linear chain tensioners NT models have an aluminum base with tensile strength of 240MPa, completely enclosed to prevent infiltrations by external agents. The galvanized steel rods glide thanks to self-lubricating plastic bushings. 

The linear chain tensioners TO – TA – NT models have a tensioning shoe or head in wear-resistant plastic material with low friction coefficient (polyethylene 1,000,000 UHMW with dynamic dry steel friction coefficient of 0.06) and can withstand a temperature of 80°C. With different profiles, the polyethylene shoes have a wear coefficient substantially equal to zero a these temperatures and are available for ISO or ASA, simple, double and triple chain types. 

The linear tensioners ET models are particularly indicated when working in the presence of high temperatures where rubber and plastic materials would be subject to wear. They can work at temperatures as high as 200°C. Brackets in galvanized steel or heads in light diecast alloy are mounted on the gliding rods, where it is also possible to install pulleys, chain tensioning pinions, etc.

The linear chain tensioners ET models can also be supplied in the TIRO version. 

The linear chain tensioners TO05 models are the version in plastic material and have the same mechanical parameters as the previous models.They can withstand working temperatures up to 65°C. 

It is possible to produce, for all models, a version with glide rods and assembly parts in stainless style type AISI 304/316, springs in AISI 302.  

The linear tensioners SS version completely in stainless steel has the base machined from solid AISI 304, PTFE bushings for rod glide and all mechanical parts and fasteners in AISI 304/316, spring in AISI 302.

  1. LINEAR CHAIN TENSIONER - TO
  2. LINEAR CHAIN TENSIONER - TA
  3. LINEAR CHAIN TENSIONER - NT
  4. LINEAR CHAIN TENSIONER - NTA
  5. LINEAR TENSIONER - ET
  6. LINEAR TENSIONER - ETL
  7. LINEAR TENSIONER - ETL SS
  8. LINEAR BELT TENSIONER - ET PU
  9. LINEAR CHAIN TENSIONER - ETR
  10. LINEAR TENSIONER - ETH & ETHG
  11. LINEAR BELT TENSIONER - ETH & ETHG PU
  12. LINEAR CHAIN TENSIONER - ETHR
  13. LINEAR TENSIONER - ET BASE
  14. FOR LINEAR TENSIONERS
  1. 1
    LINEAR DRIVE CHAIN TENSIONER ETR1RSRDRTKU with idler sprocket 10B2 5\8"x3\8" Z15 Newton 130-250 with PTFE bushings
    Price:
    €54.70
    Linear chain tensioner type ZETASASSI® ETR1 with PTFE glide bushings equipped idler sprocket with bearing for chain 10B2 5\8"x3\8" 15 teeth double made of C45 steel Newton 130:250 (Made in Italy)
  2. 2
    LINEAR CHAIN TENSIONER 10B3 5/8"x3/8" triple Newton 180-420 with PTFE glide bushings
    Price:
    €54.90
    Linear chain tensioner with PTFE glide bushings for chain 10B3 5/8"x3/8" triple type TO2TKU ZETASASSI® round head Newton 180:420 (Made in Italy)
  3. 3
    LINEAR CHAIN TENSIONER 12A2 ASA60 double Newton 180-420
    Price:
    €54.90
    Linear chain tensioner for chain 12A2 ASA60 double type TA2T ZETASASSI® round arch head Newton 180:420 (Made in Italy)
  4. 4
    LINEAR CHAIN TENSIONER 10A2 ASA50 double Newton 180-420 with PTFE glide bushings
    Price:
    €54.90
    Linear chain tensioner with PTFE glide bushings for chain 10A2 ASA50 double type TA2TKU ZETASASSI® round arch head Newton 180:420 (Made in Italy)
  5. 5
    LINEAR DRIVE CHAIN TENSIONER ETR2RSRDRTKU with idler sprocket 10B1 5\8"x3\8" Z15 Newton 180-420 with PTFE bushings
    Price:
    €54.90
    Linear chain tensioner type ZETASASSI® ETR2 with PTFE glide bushings equipped idler sprocket with bearing for chain 10B1 5\8"x3\8" 15 teeth simple made of C45 steel Newton 180:420 (Made in Italy)
  6. 6
    LINEAR CHAIN TENSIONER type INOX 10B2 5/8"x3/8" double Newton 210-350
    Price:
    €55.00
    Linear chain tensioner for chain 10B2 5/8"x3/8" double type TA2OINOX ZETASASSI® oval arch head Newton 210:350 (Made in Italy)
  7. 7
    LINEAR CHAIN TENSIONER type INOX 12B2 3/4"x7/16" double Newton 210-350
    Price:
    €55.00
    Linear chain tensioner for chain 12B2 3/4"x7/16" double type TA2OINOX ZETASASSI® oval arch head Newton 210:350 (Made in Italy)
  8. 8
    LINEAR DRIVE CHAIN TENSIONER ETR2ACKU with idler sprocket simple 12B1 3\4"x7\16" Z13 Newton 180-420 with PTFE bushings
    Price:
    €55.00
    Linear chain tensioner type ZETASASSI® ETR2 with PTFE glide bushings equipped idler sprocket with bearing for simple chain 12B1 3\4"x7\16" 13 teeth made of C45 steel Newton 180:420 (Made in Italy)
  9. 9
    LINEAR DRIVE CHAIN TENSIONER ETR3RSRDRT with idler sprocket 16B1 1"x17 Z13 Newton 300-650
    Price:
    €55.00
    Linear chain tensioner type ZETASASSI® ETR3 equipped idler sprocket with bearing for chain 16B1 1"x17m\m 13 teeth simple made of C45 steel Newton 300:650 (Made in Italy)
  10. 10
    LINEAR CHAIN TENSIONER 20A1 ASA100 simple Newton 300-650
    Price:
    €55.30
    Linear chain tensioner for chain 20A1 ASA100 simple type TA3T ZETASASSI® round arch head Newton 300:650 (Made in Italy)
  11. 11
    LINEAR CHAIN TENSIONER 24A1 ASA120 simple Newton 300-650
    Price:
    €55.30
    Linear chain tensioner for chain 24A1 ASA120 simple type TA3T ZETASASSI® round arch head Newton 300:650 (Made in Italy)
  12. 12
    LINEAR CHAIN TENSIONER 16A1 ASA80 simple Newton 300-650
    Price:
    €55.30
    Linear chain tensioner for chain 16A1 ASA80 simple type TA3T ZETASASSI® round arch head Newton 300:650 (Made in Italy)
  13. 13
    LINEAR DRIVE CHAIN TENSIONER ETR2ACKU with idler sprocket simple 12B1 3\4"x7\16" Z15 Newton 180-420 with PTFE bushings
    Price:
    €55.30
    Linear chain tensioner type ZETASASSI® ETR2 with PTFE glide bushings equipped idler sprocket with bearing for simple chain 12B1 3\4"x7\16" 15 teeth made of C45 steel Newton 180:420 (Made in Italy)
  14. 14
    LINEAR DRIVE BELT TENSIONER ET3PU  with idler roller and bearings Ø60xL60 in aluminum Newton 300-650
    Price:
    €55.40
    Linear belt tensioner type ZETASASSI® ET3PU equipped idler roller with bearings Ø60 x L60 m\m made of aluminum Newton 300:650 (Made in Italy)
  15. 15
    LINEAR CHAIN TENSIONER type INOX 08A2 ASA40 double Newton 110-240 with PTFE glide bushings
    Price:
    €55.70
    Linear chain tensioner with PTFE glide bushings for chain 08A2 ASA40 double type TO1OINOXKU ZETASASSI® oval head Newton 110:240 (Made in Italy)
  16. 16
    CHAIN TENSIONER type INOX 10B3 5/8"x3/8" triple Newton 210-350
    Price:
    €55.70
    Linear chain tensioner with glide bushings for chain 10B3 5/8"x3/8" triple type NT2INOX ZETASASSI® round head Newton 210:350 (Made in Italy)
  17. 17
    LINEAR TENSIONER ET1INOXKU type INOX thread M12x1,75 mm for attachment of accessories Newton 110-240 with PTFE bushings
    Price:
    €55.70
    Linear tensioner with PTFE glide bushings thread M12x1,75 m\m for attachment of accessories type ET1INOXKU ZETASASSI® Newton 110:240 (Made in Italy)
  18. 18
    LINEAR TENSIONER ET1INOXKU type INOX thread M10x1,5 mm for attachment of accessories Newton 110-240 with PTFE bushings
    Price:
    €55.70
    Linear tensioner with PTFE glide bushings thread M10x1,5 m\m for attachment of accessories type ET1INOXKU ZETASASSI® Newton 110:240 (Made in Italy)
  19. 19
    LINEAR DRIVE BELT TENSIONER ET1PUKU  with idler roller Ø60xL60 in aluminum N130-250 with PTFE bushings
    Price:
    €55.70
    Linear belt tensioner type ZETASASSI® ET1PUKU with PTFE glide bushings equipped idler roller with bearings Ø60 x L60 m\m made of aluminum Newton 130:250 (Made in Italy)
  20. 20
    LINEAR DRIVE BELT TENSIONER ET3PU  with idler roller and bearings Ø60xL60 in zinc-coated steel Newton 300-650
    Price:
    €55.90
    Linear belt tensioner type ZETASASSI® ET3PU equipped idler roller with bearings Ø60 x L60 m\m made of zinc-coated steel Newton 300:650 (Made in Italy)
  21. 21
    LINEAR CHAIN TENSIONER 16B2 1"x17mm double Newton 180-420 with PTFE glide bushings
    Price:
    €56.00
    Linear chain tensioner with PTFE glide bushings for chain 16B2 1"x17m\m double type TO2TKU ZETASASSI® round head Newton 180:420 (Made in Italy)
  22. 22
    LINEAR TENSIONER ET2INOX type INOX thread M16x2 mm for attachment of accessories Newton 210-350
    Price:
    €56.00
    Linear tensioner thread M16x2 m\m for attachment of accessories type ET2INOX ZETASASSI® Newton 210:350 (Made in Italy)
  23. 23
    LINEAR DRIVE CHAIN TENSIONER ETR1ACKU with idler sprocket double 08B2 1\2"x5\16" Z16 Newton 95-190 with PTFE bushings
    Price:
    €56.10
    Linear chain tensioner type ZETASASSI® ETR1 with PTFE glide bushings equipped idler sprocket with bearings for double chain 08B2 1\2"x5\16" 16 teeth made of C45 steel Newton 95:190 (Made in Italy)
  24. 24
    LINEAR DRIVE CHAIN TENSIONER ETR3AC with idler sprocket double 10B2 5\8"x3\8" Z17 Newton 300-650
    Price:
    €56.10
    Linear chain tensioner type ZETASASSI® ETR3 equipped idler sprocket with bearings for double chain 10B2 5\8"x3\8" 17 teeth made of C45 steel Newton 300:650 (Made in Italy)
  25. 25
    LINEAR DRIVE BELT TENSIONER ET1PUKU  with idler roller Ø50xL50 in zinc-coated steel N90-340 with PTFE bushings
    Price:
    €56.10
    Linear belt tensioner type ZETASASSI® ET1PU340KU with PTFE glide bushings equipped idler roller with bearings Ø50 x L50 m\m made of zinc-coated steel Newton 90:340 (Made in Italy)
  26. 26
    LINEAR DRIVE BELT TENSIONER ET1PUKU  with idler roller Ø50xL50 in zinc-coated steel N95-190 with PTFE bushings
    Price:
    €56.10
    Linear belt tensioner type ZETASASSI® ET1PU190KU with PTFE glide bushings equipped idler roller with bearings Ø50 x L50 m\m made of zinc-coated steel Newton 95:190 (Made in Italy)
  27. 27
    LINEAR DRIVE BELT TENSIONER ET1PUKU  with idler roller Ø50xL50 in zinc-coated steel N110-450 with PTFE bushings
    Price:
    €56.10
    Linear belt tensioner type ZETASASSI® ET1PU450KU with PTFE glide bushings equipped idler roller with bearings Ø50 x L50 m\m made of zinc-coated steel Newton 110:450 (Made in Italy)
  28. 28
    LINEAR DRIVE BELT TENSIONER ET1PUKU  with idler roller Ø60xL60 in zinc-coated steel N130-250 with PTFE bushings
    Price:
    €56.10
    Linear belt tensioner type ZETASASSI® ET1PUKU with PTFE glide bushings equipped idler roller with bearings Ø60 x L60 m\m made of zinc-coated steel Newton 130:250 (Made in Italy)
  29. 29
    LINEAR DRIVE BELT TENSIONER ET2PU  with idler roller and bearings Ø80xL80 in aluminum Newton 180-420
    Price:
    €56.10
    Linear belt tensioner type ZETASASSI® ET2PU equipped idler roller with bearings Ø80 x L80 m\m made of aluminum Newton 180:420 (Made in Italy)
  30. 30
    LINEAR DRIVE BELT TENSIONER ET2PU  with idler roller and bearings Ø80xL80 in zinc-coated steel Newton 180-420
    Price:
    €56.10
    Linear belt tensioner type ZETASASSI® ET2PU equipped idler roller with bearings Ø80 x L80 m\m made of zinc-coated steel Newton 180:420 (Made in Italy)
  31. 31
    LINEAR CHAIN TENSIONER type INOX 08A2 ASA40 double Newton 110-240 with PTFE glide bushings
    Price:
    €56.30
    Linear chain tensioner with PTFE glide bushings for chain 08A2 ASA40 double type TO1TINOXKU ZETASASSI® round head Newton 110:240 (Made in Italy)
  32. 32
    LINEAR DRIVE BELT TENSIONER ET2PUKU  with idler roller Ø50xL50 in nylon N180-420 with PTFE bushings
    Price:
    €56.30
    Linear belt tensioner type ZETASASSI® ET2PUKU with PTFE glide bushings equipped idler roller with bearings Ø50 x L50 m\m made of nylon Newton 180:420 (Made in Italy)
  33. 33
    LINEAR DRIVE BELT TENSIONER ET2PUKU  with idler roller Ø40xL45 in nylon N180-420 with PTFE bushings
    Price:
    €56.30
    Linear belt tensioner type ZETASASSI® ET2PUKU with PTFE glide bushings equipped idler roller with bearings Ø40 x L45 m\m made of nylon Newton 180:420 (Made in Italy)
  34. 34
    LINEAR CHAIN TENSIONER 16B2 1"x17mm double Newton 110-450 with PTFE glide bushings
    Price:
    €56.40
    Linear chain tensioner with PTFE glide bushings for chain 16B2 1"x17m\m double type TO1PTKU ZETASASSI® round head Newton 110:450 (Made in Italy)
  35. 35
    LINEAR CHAIN TENSIONER type INOX 10B1 5/8"x3/8" simple Newton 210-350
    Price:
    €56.40
    Linear chain tensioner for chain 10B1 5/8"x3/8" simple type TA2TINOX ZETASASSI® round arch head Newton 210:350 (Made in Italy)
  36. 36
    LINEAR CHAIN TENSIONER type INOX 12B1 3/4"x7/16" simple Newton 210-350
    Price:
    €56.40
    Linear chain tensioner for chain 12B1 3/4"x7/16" simple type TA2TINOX ZETASASSI® round arch head Newton 210:350 (Made in Italy)
  37. 37
    LINEAR DRIVE CHAIN TENSIONER ETR1ACKU with idler sprocket double 10B2 5\8"x3\8" Z17 Newton 130-250 with PTFE bushings
    Price:
    €56.40
    Linear chain tensioner type ZETASASSI® ETR1 with PTFE glide bushings equipped idler sprocket with bearings for double chain 10B2 5\8"x3\8" 17 teeth made of C45 steel Newton 130:250 (Made in Italy)
  38. 38
    LINEAR DRIVE CHAIN TENSIONER ETR2ACKUTE with idler sprocket simple 10B1 5\8"x3\8" Z17 hardened Newton 180-420
    Price:
    €56.40
    Linear chain tensioner type ZETASASSI® ETR2 with PTFE glide bushings equipped idler sprocket with bearing for simple chain 10B1 5\8"x3\8" 17 hardened teeth made of C45 steel Newton 180:420 (Made in Italy)
  39. 39
    LINEAR DRIVE CHAIN TENSIONER ETR2RSRDRTKU with idler sprocket 12B1 3\4"x7\16" Z15 Newton 180-420 with PTFE bushings
    Price:
    €56.60
    Linear chain tensioner type ZETASASSI® ETR2 with PTFE glide bushings equipped idler sprocket with bearing for chain 12B1 3\4"x7\16" 15 teeths imple made of C45 steel Newton 180:420 (Made in Italy)
  40. 40
    LINEAR DRIVE CHAIN TENSIONER ETR1RSRDRTKU with idler sprocket 10B2 5\8"x3\8" Z15 Newton 95-190 with PTFE bushings
    Price:
    €56.70
    Linear chain tensioner type ZETASASSI® ETR1 with PTFE glide bushings equipped idler sprocket with bearing for chain 10B2 5\8"x3\8" 15 teeth double made of C45 steel Newton 95:190 (Made in Italy)
  41. 41
    LINEAR DRIVE CHAIN TENSIONER ETR2RSRDRT with idler sprocket 12B3 3\4"x7\16" Z15 Newton 180-420
    Price:
    €56.70
    Linear chain tensioner type ZETASASSI® ETR2 equipped idler sprocket with bearing for chain 12B3 3\4"x7\16" 15 teeth triple made of C45 steel Newton 180:420 (Made in Italy)
  42. 42
    LINEAR CHAIN TENSIONER 12B3 3/4"x7/16" triple Newton 90-340 with PTFE glide bushings
    Price:
    €56.80
    Linear chain tensioner with PTFE glide bushings for chain 12B3 3/4"x7/16" triple type TO1PTKU ZETASASSI® round head Newton 90:340 (Made in Italy)
  43. 43
    CHAIN TENSIONER type INOX 16B2 1"x17mm double Newton 210-350
    Price:
    €56.80
    Linear chain tensioner with glide bushings for chain 16B2 1"x17m\m double type NT2INOX ZETASASSI® round head Newton 210:350 (Made in Italy)
  44. 44
    LINEAR DRIVE CHAIN TENSIONER ETR2ACKUTE with idler sprocket simple 12B1 3\4"x7\16" Z15 hardened Newton 180-420
    Price:
    €56.80
    Linear chain tensioner type ZETASASSI® ETR2 with PTFE glide bushings equipped idler sprocket with bearing for simple chain 12B1 3\4"x7\16" 15 hardened teeth made of C45 steel Newton 180:420 (Made in Italy)
  45. 45
    LINEAR CHAIN TENSIONER type INOX 10B2 5/8"x3/8" double Newton 210-350
    Price:
    €57.00
    Linear chain tensioner for chain 10B2 5/8"x3/8" double type TA2TINOX ZETASASSI® round arch head Newton 210:350 (Made in Italy)
  46. 46
    LINEAR CHAIN TENSIONER type INOX 12B2 3/4"x7/16" double Newton 210-350
    Price:
    €57.00
    Linear chain tensioner for chain 12B2 3/4"x7/16" double type TA2TINOX ZETASASSI® round arch head Newton 210:350 (Made in Italy)
  47. 47
    CHAIN TENSIONER type INOX 06B3 3/8"x7/32" triple Newton 110-240
    Price:
    €57.00
    Linear chain tensioner with glide bushings for chain 06B3 3/8"x7/32" triple type NTA1INOX ZETASASSI® round arch head Newton 110:240 (Made in Italy)
  48. 48
    LINEAR DRIVE CHAIN TENSIONER ETR3RSRDRT with idler sprocket 06B3 3\8"x7\32" Z15 Newton 300-650
    Price:
    €57.10
    Linear chain tensioner type ZETASASSI® ETR3 equipped idler sprocket with bearing for chain 06B3 3\8"x7\32" 15 teeth triple made of C45 steel Newton 300:650 (Made in Italy)