ZETASASSI® Products

An imitation is never anything but an imitation,

the original contains the past, the present and the future.

We create reliability that lasts and that means savings …

.... often imitated but never equaled!

Italian excellence always at your side and at your service... 

Tensioners are devices  used to take up any slack and maintain the correct tension of the transmission. They may be automatic or fixed, linear or rotary; in all cases, however, they are adjustable.  The automatic mechanisms may consist of springs or rubber elastomers.The purpose of a tensioner, in addition to picking up the slack in  the transmission, is to prevent vibrations, noise and possible breakage of the transmissions. The advantages of its use include: absence of maintenance, better transmission performance, less wear of parts and thus longer lasting transmissions.

All this makes the use of tensioners  advantageous from the technical as well as cost savings standpoint.

The bases of our tensions may be constructed in a range of materials: plastic, aluminum, aluminum alloys, in some cases completely machined from solid, also in AISI 304L/316L, or to customers’ requests in any type of material.

The compound we use the most in die-casting is a special alloy of aluminum that is extremely sturdy, with antiseize properties. It actually boasts a tensile strength of 440MPa, while most aluminum compounds have tensile strength around 240 MPa; if we consider that the iron most widely and commonly used is FE360, which has a tensile strength of 360MPa, we can say that our alloy is ideal for this type of application, and is decisive above all for the long life of the product in any situation …

All our materials are machined directly in our workshop using numerical control machines. 

Tensioners can also be used as pressing units, shock absorbers, stabilizers and regulator/tensioners of rollers for belts, etc.

LINEAR AUTOMATIC TENSIONERS

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TO

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TO-05
AUTOMATIC CHAIN TENSIONERS TYPE TO08
AUTOMATIC CHAIN TENSIONERS TYPE TO-SS
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TO1
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TO2
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TO3

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TA

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TA-05
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TA1
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TA2
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE TA3
AUTOMATIC CHAIN TENSIONERS TYPE TA-SS

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE NT

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE NTA

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE NT1
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE NT2
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE NTA1
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE NTA2

AUTOMATIC DRIVE TENSIONERS TYPE ET

AUTOMATIC DRIVE TENSIONERS TYPE ET1
AUTOMATIC DRIVE TENSIONERS TYPE ET2
AUTOMATIC DRIVE TENSIONERS TYPE ET3

AUTOMATIC TENSIONERS TYPE ETL

AUTOMATIC TENSIONERS TYPE ETL-SS

AUTOMATIC TENSIONERS TYPE ETL-SS
AUTOMATIC TENSIONERS TYPE ETL-SS

AUTOMATIC DRIVE BELT TENSIONERS TYPE ET-PU

AUTOMATIC DRIVE BELT TENSIONERS TYPE ET1-PU
AUTOMATIC DRIVE BELT TENSIONERS TYPE ET3-PU
AUTOMATIC DRIVE BELT TENSIONERS TYPE ET2-PU
AUTOMATIC DRIVE BELT TENSIONERS TYPE ET-PUG

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE ET-R

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE ETH-R

AUTOMATIC DRIVE CHAIN TENSIONERS TYPE ETR-AC
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE ETR-RS RD RT
AUTOMATIC DRIVE CHAIN TENSIONERS TYPE ETH-R

AUTOMATIC DRIVE TENSIONERS TYPE ETH

AUTOMATIC DRIVE BELT TENSIONERS TYPE ETH-PU

AUTOMATIC DRIVE TENSIONERS TYPE ETH
AUTOMATIC DRIVE TENSIONERS TYPE ETHG
AUTOMATIC DRIVE BELT TENSIONERS TYPE ETH-PU
AUTOMATIC DRIVE BELT TENSIONERS TYPE ETHG-PU

AUTOMATIC DRIVE TENSIONERS TYPE ET-BASE

FOR LINEAR TENSIONERS

AUTOMATIC DRIVE TENSIONERS TYPE ET-BASE
FOR LINEAR TENSIONERS

ROTARY AUTOMATIC ARM TENSIONERS

AUTOMATIC ARM TENSIONERS TYPE TC

AUTOMATIC ARM CHAIN TENSIONERS TYPE TCP

AUTOMATIC ARM CHAIN TENSIONERS TC+PAT

AUTOMATIC ARM BELT TENSIONERS TYPE TC-PU

AUTOMATIC ARM BELT TENSIONERS TYPE TC-PUG

AUTOMATIC ARM CHAIN TENSIONERS TYPE TCR

AUTOMATIC ARM TENSIONERS TYPE TC
AUTOMATIC ARM CHAIN TENSIONERS TYPE TCP
AUTOMATIC ARM CHAIN TENSIONERS TC+PAT
AUTOMATIC ARM BELT TENSIONERS TYPE TC-PU
AUTOMATIC ARM BELT TENSIONERS TYPE TC-PUG
AUTOMATIC ARM CHAIN TENSIONERS TYPE TCR

ROTARY AUTOMATIC ARM TENSIONERS

AUTOMATIC ARM TENSIONERS TYPE TR

AUTOMATIC ARM CHAIN TENSIONERS TYPE TRP

AUTOMATIC ARM CHAIN TENSIONERS TR+PAT

AUTOMATIC ARM BELT TENSIONERS TYPE TR-PU

AUTOMATIC ARM BELT TENSIONERS TYPE TR-PUG

AUTOMATIC ARM CHAIN TENSIONERS TYPE TRR

AUTOMATIC ARM TENSIONERS TYPE TR
AUTOMATIC ARM CHAIN TENSIONERS TYPE TRP
AUTOMATIC ARM CHAIN TENSIONERS TR+PAT
AUTOMATIC ARM BELT TENSIONERS TYPE TR-PU
AUTOMATIC ARM BELT TENSIONERS TYPE TR-PUG
AUTOMATIC ARM CHAIN TENSIONERS TYPE TRR

ROTARY AUTOMATIC ARM TENSIONERS

ELEMENTS ARM TENSIONERS TYPE RH

ELEMENTS ARM CHAIN TENSIONERS TYPE RHP

ELEMENTS ARM CHAIN TENSIONERS RH+PAT

ELEMENTS ARM BELTS TENSIONERS TYPE RH-PU

ELEMENTS ARM BELT TENSIONERS TYPE RH-PUG

ELEMENTS ARM CHAIN TENSIONERS TYPE RHR

ELEMENTS ARM TENSIONERS TYPE RH
ELEMENTS ARM CHAIN TENSIONERS TYPE RHP
ELEMENTS ARM CHAIN TENSIONERS RH+PAT
ELEMENTS ARM BELTS TENSIONERS TYPE RH-PU
ELEMENTS ARM BELT TENSIONERS TYPE RH-PUG
ELEMENTS ARM CHAIN TENSIONERS TYPE RHR

DIRECTIONAL TENSIONERS

DIRECTIONAL TENSIONERS TYPE ORIENT

DIRECTIONAL CHAIN TENSIONERS TYPE ORIENT-P

ADJUSTABLE DIRECTIONAL TENSIONERS TYPE ORIENT-PAT

DIRECTIONAL BELT TENSIONERS TYPE ORIENT-PU

DIRECTIONAL BELT TENSIONERS TYPE ORIENT-PUG

DIRECTIONAL CHAIN TENSIONER TYPE ORIENT-R

DIRECTIONAL TENSIONERS TYPE ORIENT
DIRECTIONAL CHAIN TENSIONERS TYPE ORIENT-P
ADJUSTABLE DIRECTIONAL TENSIONERS TYPE ORIENT-PAT
DIRECTIONAL BELT TENSIONERS TYPE ORIENT-PU
DIRECTIONAL BELT TENSIONERS TYPE ORIENT-PUG
DIRECTIONAL CHAIN TENSIONER TYPE ORIENT-R

ADJUSTABLE TENSIONERS

ADJUSTABLE TENSIONERS

ADJUSTABLE TENSIONERS

Accessories

PE 1000 UHMW CHAIN TENSIONING HEAD

IDLER ROLLERS

TRAPEZOIDAL WHARVES PULLEYS

IDLER SPROCKETS

CHAIN

PE 1000 UHMW CHAIN TENSIONING HEAD
IDLER ROLLERS
TRAPEZOIDAL WHARVES PULLEYS
IDLER SPROCKETS
CHAIN

TORQUE LIMITER& AXIAL POWER LIMITERS

CLUTCH TORQUE LIMITER

SPARE PARTS FOR LF AND GS

AXIAL POWER LIMITERS

CLUTCH TORQUE LIMITER
SPARE PARTS FOR LF AND GS
AXIAL POWER LIMITERS

ADJUSTABLE CAMS- AUTOMATIC GREASERS- ERGAL SCREWS

ADJUSTABLE CAMS

AUTOMATIC GREASERS

ERGAL SCREWS

ADJUSTABLE CAMS
AUTOMATIC GREASERS
ERGAL SCREWS