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 BELT TENSIONER ET1PU  with idler roller and bearings Ø40xL45 in nylon Newton 40-85
    Price:
    €36.30
    Linear belt tensioner type ZETASASSI® ET1PU85 equipped idler roller with bearings Ø40 x L45 m\m made of nylon Newton 40:85 (Made in Italy)
  2. 2
    LINEAR DRIVE BELT TENSIONER ET1PU  with idler roller and bearings Ø40xL45 in nylon Newton 95-190
    Price:
    €36.30
    Linear belt tensioner type ZETASASSI® ET1PU190 equipped idler roller with bearings Ø40 x L45 m\m made of nylon Newton 95:190 (Made in Italy)
  3. 3
    LINEAR DRIVE BELT TENSIONER ET1PU  with idler roller and bearings Ø50xL50 in nylon Newton 95-190
    Price:
    €36.30
    Linear belt tensioner type ZETASASSI® ET1PU190 equipped idler roller with bearings Ø50 x L50 m\m made of nylon Newton 95:190 (Made in Italy)
  4. 4
    LINEAR CHAIN TENSIONER 06B2 3/8"x7/32" double Newton 95-190 with PTFE glide bushings
    Price:
    €36.40
    Linear chain tensioner with PTFE glide bushings for chain 06B2 3/8"x7/32" double type TO1O190KU ZETASASSI® oval head Newton 95:190 (Made in Italy)
  5. 5
    LINEAR CHAIN TENSIONER 06B1 3/8"x7/32" simple Newton 95-190 with PTFE glide bushings
    Price:
    €36.40
    Linear chain tensioner with PTFE glide bushings for chain 06B1 3/8"x7/32" simple type TO1O190KU ZETASASSI® oval head Newton 95:190 (Made in Italy)
  6. 6
    LINEAR CHAIN TENSIONER 08B1 1/2"x5/16" simple Newton 95-190 with PTFE glide bushings
    Price:
    €36.40
    Linear chain tensioner with PTFE glide bushings for chain 08B1 1/2"x5/16" simple type TO1O190KU ZETASASSI® oval head Newton 95:190 (Made in Italy)
  7. 7
    LINEAR CHAIN TENSIONER 08B2 1/2"x5/16" double Newton 95-190 with PTFE glide bushings
    Price:
    €36.40
    Linear chain tensioner with PTFE glide bushings for chain 08B2 1/2"x5/16" double type TO1O190KU ZETASASSI® oval head Newton 95:190 (Made in Italy)
  8. 8
    LINEAR CHAIN TENSIONER 10B1 5/8"x3/8" simple Newton 95-190 with PTFE glide bushings
    Price:
    €36.40
    Linear chain tensioner with PTFE glide bushings for chain 10B1 5/8"x3/8" simple type TO1O190KU ZETASASSI® oval head Newton 95:190 (Made in Italy)
  9. 9
    CHAIN TENSIONER type INOX < 08B1 1/2"x5/16" simple Newton 110-240
    Price:
    €36.40
    Linear chain tensioner with glide bushings for chain < 08B1 1/2"x5/16" simple type NT1INOX ZETASASSI® round head Newton 110:240 (Made in Italy)
  10. 10
    LINEAR TENSIONER ET1KU thread M10x1,5 mm for attachment of accessories Newton 130-250 with PTFE glide bushings
    Price:
    €36.40
    Linear tensioner with PTFE glide bushings thread M10x1,5 m\m for attachment of accessories type ET1KU ZETASASSI® Newton 130:250 (Made in Italy)
  11. 11
    LINEAR TENSIONER ET1KU thread M12x1,75 mm for attachment of accessories Newton 130-250 with PTFE glide bushings
    Price:
    €36.40
    Linear tensioner with PTFE glide bushings thread M12x1,75 m\m for attachment of accessories type ET1KU ZETASASSI® Newton 130:250 (Made in Italy)
  12. 12
    LINEAR DRIVE CHAIN TENSIONER ETR1ACTE with idler sprocket simple 10B1 5\8"x3\8" Z17 hardened Newton 95-190
    Price:
    €36.40
    Linear chain tensioner type ZETASASSI® ETR1 equipped idler sprocket with bearing for simple chain 10B1 5\8"x3\8" 17 hardened teeth made of C45 steel Newton 95:190 (Made in Italy)
  13. 13
    LINEAR CHAIN TENSIONER 08A2 ASA40 double Newton 130-250 with PTFE glide bushings
    Price:
    €36.50
    Linear chain tensioner with PTFE glide bushings for chain 08A2 ASA40 double type TO1TKU ZETASASSI® round head Newton 130:250 (Made in Italy)
  14. 14
    LINEAR DRIVE CHAIN TENSIONER ETR1RSRDRT with idler sprocket 12B1 3\4"x7\16" Z15 Newton 95-190
    Price:
    €36.50
    Linear chain tensioner type ZETASASSI® ETR1 equipped idler sprocket with bearing for chain 12B1 3\4"x7\16" 15 teeths imple made of C45 steel Newton 95:190 (Made in Italy)
  15. 15
    CHAIN TENSIONER type INOX 08A1 ASA40 simple Newton 110-240
    Price:
    €36.70
    Linear chain tensioner with glide bushings for chain 08A1 ASA40 simple type NT1INOX ZETASASSI® oval head Newton 110:240 (Made in Italy)
  16. 16
    CHAIN TENSIONER type INOX 06C2 ASA35 double Newton 110-240
    Price:
    €36.70
    Linear chain tensioner with glide bushings for chain 06C2 ASA35 double type NT1INOX ZETASASSI® round head Newton 110:240 (Made in Italy)
  17. 17
    CHAIN TENSIONER type INOX 06C1 ASA35 simple Newton 110-240
    Price:
    €36.70
    Linear chain tensioner with glide bushings for chain 06C1 ASA35 simple type NT1INOX ZETASASSI® round head Newton 110:240 (Made in Italy)
  18. 18
    LINEAR CHAIN TENSIONER < 08B1 1/2"x5/16" simple Newton 95-190 with PTFE glide bushings
    Price:
    €36.80
    Linear chain tensioner with PTFE glide bushings for chain < 08B1 1/2"x5/16" simple type TO1O190KU ZETASASSI® oval head Newton 95:190 (Made in Italy)
  19. 19
    LINEAR DRIVE CHAIN TENSIONER ETR1ACTE with idler sprocket simple 12B1 3\4"x7\16" Z15 hardened Newton 95-190
    Price:
    €36.80
    Linear chain tensioner type ZETASASSI® ETR1 equipped idler sprocket with bearing for simple chain 12B1 3\4"x7\16" 15 hardened teeth made of C45 steel Newton 95:190 (Made in Italy)
  20. 20
    LINEAR DRIVE CHAIN TENSIONER ETHR1 with idler sprocket simple 06B1 3\8"x7\32" Z21 Newton 130:250
    Price:
    €36.80
    Linear chain tensioner type ZETASASSI® ETHR1 equipped idler sprocket with bearing for simple chain 06B1 3\8"x7\32" 21 teeth made of C45 steel Newton 130:250 (Made in Italy)
  21. 21
    LINEAR DRIVE CHAIN TENSIONER ETHR1 with idler sprocket simple 08B1 1\2"x5\16" Z14 Newton 130:250
    Price:
    €36.80
    Linear chain tensioner type ZETASASSI® ETHR1 equipped idler sprocket with bearing for simple chain 08B1 1\2"x5\16" 14 teeth made of C45 steel Newton 130:250 (Made in Italy)
  22. 22
    LINEAR DRIVE BELT TENSIONER ETL08PU  with idler roller and bearings Ø60xL60 in aluminum Newton 130-250
    Price:
    €36.80
    Linear belt tensioner type ZETASASSI® ETL equipped idler roller with bearings Ø60 x L60 m\m made of aluminum Newton 130:250 (Made in Italy)
  23. 23
    LINEAR DRIVE BELT TENSIONER ETL08PU  with idler roller and bearings Ø50xL50 in zinc-coated steel Newton 95-190
    Price:
    €36.80
    Linear belt tensioner type ZETASASSI® ETL equipped idler roller with bearings Ø50 x L50 m\m made of zinc-coated steel Newton 95:190 (Made in Italy)
  24. 24
    LINEAR DRIVE BELT TENSIONER ET2PU  with idler roller and bearings Ø50xL50 in nylon Newton 180-420
    Price:
    €36.80
    Linear belt tensioner type ZETASASSI® ET2PU equipped idler roller with bearings Ø50 x L50 m\m made of nylon Newton 180:420 (Made in Italy)
  25. 25
    LINEAR DRIVE BELT TENSIONER ET2PU  with idler roller and bearings Ø40xL45 in nylon Newton 180-420
    Price:
    €36.80
    Linear belt tensioner type ZETASASSI® ET2PU equipped idler roller with bearings Ø40 x L45 m\m made of nylon Newton 180:420 (Made in Italy)
  26. 26
    CHAIN TENSIONER type INOX 10B2 5/8"x3/8" double Newton 110-240
    Price:
    €37.00
    Linear chain tensioner with glide bushings for chain 10B2 5/8"x3/8" double type NT1INOX ZETASASSI® round head Newton 110:240 (Made in Italy)
  27. 27
    LINEAR TENSIONER ETH2 wiht fork 44 mm for attachment of accessories Newton 180-420
    Price:
    €37.00
    Linear tensioner with fork type ZETASASSI® ETH2 Newton 180:420 (Made in Italy)
  28. 28
    LINEAR DRIVE CHAIN TENSIONER ETR2ACTE with idler sprocket simple 10B1 5\8"x3\8" Z17 hardened Newton 180-420
    Price:
    €37.00
    Linear chain tensioner type ZETASASSI® ETR2 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)
  29. 29
    LINEAR DRIVE CHAIN TENSIONER ETHR1 with idler sprocket simple 08B1 1\2"x5\16" Z16 Newton 130:250
    Price:
    €37.00
    Linear chain tensioner type ZETASASSI® ETHR1 equipped idler sprocket with bearing for simple chain 08B1 1\2"x5\16" 16 teeth made of C45 steel Newton 130:250 (Made in Italy)
  30. 30
    LINEAR DRIVE CHAIN TENSIONER ETR2AC with idler sprocket simple 08B1 1\2"x5\16" Z18 Newton 180-420
    Price:
    €37.00
    Linear chain tensioner type ZETASASSI® ETR2 equipped idler sprocket with bearing for simple chain 08B1 1\2"x5\16" 18 teeth made of C45 steel Newton 180:420 (Made in Italy)
  31. 31
    LINEAR CHAIN TENSIONER 06B2 3/8"x7/32" double Newton 95-190 with PTFE glide bushings
    Price:
    €37.10
    Linear chain tensioner with PTFE glide bushings for chain 06B2 3/8"x7/32" double type TO1T190KU ZETASASSI® round head Newton 95:190 (Made in Italy)
  32. 32
    LINEAR CHAIN TENSIONER 08B2 1/2"x5/16" double Newton 95-190 with PTFE glide bushings
    Price:
    €37.10
    Linear chain tensioner with PTFE glide bushings for chain 08B2 1/2"x5/16" double type TO1T190KU ZETASASSI® round head Newton 95:190 (Made in Italy)
  33. 33
    LINEAR CHAIN TENSIONER 08B1 1/2"x5/16" simple Newton 95-190 with PTFE glide bushings
    Price:
    €37.10
    Linear chain tensioner with PTFE glide bushings for chain 08B1 1/2"x5/16" simple type TO1T190KU ZETASASSI® round head Newton 95:190 (Made in Italy)
  34. 34
    LINEAR CHAIN TENSIONER 06B1 3/8"x7/32" simple Newton 95-190 with PTFE glide bushings
    Price:
    €37.10
    Linear chain tensioner with PTFE glide bushings for chain 06B1 3/8"x7/32" simple type TO1T190KU ZETASASSI® round head Newton 95:190 (Made in Italy)
  35. 35
    LINEAR CHAIN TENSIONER 10B1 5/8"x3/8" simple Newton 95-190 with PTFE glide bushings
    Price:
    €37.10
    Linear chain tensioner with PTFE glide bushings for chain 10B1 5/8"x3/8" simple type TO1T190KU ZETASASSI® round head Newton 95:190 (Made in Italy)
  36. 36
    LINEAR CHAIN TENSIONER 10A2 ASA50 double Newton 180-420
    Price:
    €37.10
    Linear chain tensioner for chain 10A2 ASA50 double type TA2O ZETASASSI® oval arch head Newton 180:420 (Made in Italy)
  37. 37
    LINEAR DRIVE CHAIN TENSIONER ETR2RSRDRT with idler sprocket 12B1 3\4"x7\16" Z15 Newton 180-420
    Price:
    €37.10
    Linear chain tensioner type ZETASASSI® ETR2 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)
  38. 38
    CHAIN TENSIONER type INOX 08A1 ASA40 simple Newton 110-240
    Price:
    €37.20
    Linear chain tensioner with glide bushings for chain 08A1 ASA40 simple type NT1INOX ZETASASSI® round head Newton 110:240 (Made in Italy)
  39. 39
    CHAIN TENSIONER 16B2 1"x17mm double Newton 180-420
    Price:
    €37.20
    Linear chain tensioner with glide bushings for chain 16B2 1"x17m\m double type NT2 ZETASASSI® round head Newton 180:420 (Made in Italy)
  40. 40
    LINEAR DRIVE CHAIN TENSIONER ETR1AC with idler sprocket double 06B2 3\8"x7\32" Z21 Newton 130-250
    Price:
    €37.20
    Linear chain tensioner type ZETASASSI® ETR1 equipped idler sprocket with bearings for double chain 06B2 3\8"x7\32" 21 teeth made of C45 steel Newton 130:250 (Made in Italy)
  41. 41
    LINEAR DRIVE CHAIN TENSIONER ETR1RSRDRT with idler sprocket 08B2 1\2"x5\16" Z15 Newton 130-250
    Price:
    €37.20
    Linear chain tensioner type ZETASASSI® ETR1 equipped idler sprocket with bearing for chain 08B2 1\2"x5\16" 15 teeth double made of C45 steel Newton 130:250 (Made in Italy)
  42. 42
    LINEAR DRIVE BELT TENSIONER ETL08PU  with idler roller and bearings Ø60xL60 in zinc-coated steel Newton 130-250
    Price:
    €37.20
    Linear belt tensioner type ZETASASSI® ETL equipped idler roller with bearings Ø60 x L60 m\m made of zinc-coated steel Newton 130:250 (Made in Italy)
  43. 43
    LINEAR CHAIN TENSIONER type INOX 08A2 ASA40 double Newton 110-240
    Price:
    €37.40
    Linear chain tensioner made of plastic material for chain 08A2 ASA40 double type TO05DP1OINOX ZETASASSI® oval head Newton 110:240 (Made in Italy)
  44. 44
    LINEAR TENSIONER ET2BASEKU  Newton 180-420 with PTFE glide bushings
    Price:
    €37.40
    ZETASASSI® Tensioner type ET2 BASE KU with PTFE bushes, Aluminum alloy body without head - Newton 180-420 (Made in Italy)
  45. 45
    LINEAR DRIVE CHAIN TENSIONER ETR2ACTE with idler sprocket simple 12B1 3\4"x7\16" Z15 hardened Newton 180-420
    Price:
    €37.40
    Linear chain tensioner type ZETASASSI® ETR2 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)
  46. 46
    LINEAR DRIVE BELT TENSIONER ET1PU  with idler roller and bearings Ø30xL35 in nylon Newton 95-190
    Price:
    €37.40
    Linear belt tensioner type ZETASASSI® ET1PU190 equipped idler roller with bearings Ø30 x L35 m\m made of nylon Newton 95:190 (Made in Italy)
  47. 47
    LINEAR DRIVE BELT TENSIONER ET1PU  with idler roller and bearings Ø30xL35 in nylon Newton 40-85
    Price:
    €37.40
    Linear belt tensioner type ZETASASSI® ET1PU85 equipped idler roller with bearings Ø30 x L35 m\m made of nylon Newton 40:85 (Made in Italy)
  48. 48
    LINEAR CHAIN TENSIONER 06C1 ASA35 simple Newton 95-190 with PTFE glide bushings
    Price:
    €37.70
    Linear chain tensioner with PTFE glide bushings for chain 06C1 ASA35 simple type TO1O190KU ZETASASSI® oval head Newton 95:190 (Made in Italy)