Automatic belt tensioners

Spann-Boy® TS as belt tensioner - Automatic belt tensioners - Murtfeldt GmbH Kunststoffe

Spann-Boy® TS as belt tensioner

with roller
Steel housing Two pre-tensioned compression springs with 40mm tension distance 44mm adjustment range
 
Spann-Box® size 0 with belt tensioner - Automatic belt tensioners - Murtfeldt GmbH Kunststoffe

Spann-Box® size 0 with belt tensioner

with roller
Plastic housing One pre-tensioned compression spring with 40mm tension distance 25mm adjustment range
 
Spann-Box® size 1 type SR-O - Automatic belt tensioners - Murtfeldt GmbH Kunststoffe

Spann-Box® size 1 type SR-O

as belt tensioner with roller
Steel housing Three pre-tensioned compression springs with 40mm tension distance 67mm adjustment range
 
Spann-Box® size 1 type SR-L - Automatic belt tensioners - Murtfeldt GmbH Kunststoffe

Spann-Box® size 1 type SR-L

Tensioning roller on long side
Steel housing Three pre-tensioned compression springs with 40mm tension distance 67mm adjustment range
 
Spann-Box® size 1 type SR-S - Automatic belt tensioners - Murtfeldt GmbH Kunststoffe

Spann-Box® size 1 type SR-S

Tensioning roller on front
Steel housing Three pre-tensioned compression springs with 40mm tension distance 67mm adjustment range