Open wire sheaves

100 and 140 mm upright sheaves

The Jefa upright sheaves contain a housing made of machined aluminium extrusion profile. This housing is much stronger and reliable than casted aluminium housings. The housing can contain a black delrin sheave or an aluminium sheave both with a sealed ball bearing. (For outside use a special version with a stainless ball bearing is available at no surcharge, please note on order). The mounting of the sheave assembly is achieved by 4 off widely spread M8 bolts. The sheave can be rotated up to 13° each side to achieve the correct line up with the steering wire.
The 100 mm diameter sheave sets should be used with 5 mm steering wire. The 140 mm diameter sheaves should be used with 6 mm steering cable. It's not advisable to use 6 mm cable on the 100 sheaves as the cable will fatigue quickly due to the too small bending radius.

All Jefa open wire sheaves are CE approved. This means that the sheave set will be able to take more loading than the maximum breaking strength of the appropriate steering wire.

Please click on the picture for a larger view.

General measurements of the upright sheaves

Jefa steering upright sheaves for open wire systems.
Part No.	Description
SH-UP100D	upright sheave assembly with 100 mm delrin sheave
SH-UP100A	upright sheave assembly with 100 mm aluminium sheave
SH-UP140D	upright sheave assembly with 140 mm delrin sheave
SH-UP140A	upright sheave assembly with 140 mm aluminium sheave

100 and 140 mm articulated sheaves

The Jefa articulated sheaves contain a housing made of aluminium extrusion profile. This housing is much stronger and reliable than casted aluminium housings. The housing can contain a black delrin sheave or an aluminium sheave both with a sealed ball bearing. (For outside use a special version with a stainless ball bearing is available at no surcharge, please note on order). The mounting of the sheave assembly is achieved by 4 off widely spread M8 bolts. The sheave can be tilted and rotated up to 13° each side in the mounting bolts to achieve the correct line up with the steering wire.
The 100 mm diameter sheave sets should be used with 5 mm steering wire. The 140 mm diameter sheaves should be used with 6 mm steering cable. It's not advisable to use 6 mm cable on the 100 sheaves as the cable will fatigue quickly due to the too small bending radius.

All Jefa open wire sheaves are CE approved. This means that the sheave set will be able to take more loading than the maximum breaking strength of the appropriate steering wire.

Please click on the picture for a larger view.

General measurements of 100 mm articulated sheave

General measurements of 140 mm articulated sheave

Jefa steering articulated sheaves for open wire systems.
Part No.	Description
SH-A100D	articulated sheave assembly with 100 mm delrin sheave
SH-A100A	articulated sheave assembly with 100 mm aluminium sheave
SH-A140D	articulated sheave assembly with 140 mm delrin sheave
SH-A140A	articulated sheave assembly with 140 mm aluminium sheave

100 and 140 mm flat sheaves

The Jefa flat sheaves contain a housing made of aluminium extrusion profile. This housing is much stronger and reliable than casted aluminium housings. The housing can contain a black delrin sheave and an aluminium sheave with a sealed ball bearing. (For outside use a special version with a stainless ball bearing is available at no surcharge, please note on order). The mounting of the sheave assembly is achieved by 4 off widely spread M10 bolts.
The 100 mm diameter sheave sets should be used with 5 mm steering wire. The 140 mm diameter sheaves should be used with 6 mm steering cable. It's not advisable to use 6 mm cable on the 100 sheaves as the cable will fatigue quickly due to the too small bending radius.

All Jefa open wire sheaves are CE approved. This means that the sheave set will be able to take more loading than the maximum breaking strength of the appropriate steering wire. Please click on the picture for a larger view.

General measurements of 100 mm flat sheave

General measurements of 140 mm flat sheave

Jefa steering flat sheaves for open wire systems.
Part No.	Description
SH-F100D	flat sheave assembly with 100 mm delrin sheave
SH-F100A	flat sheave assembly with 100 mm aluminium sheave
SH-F140D	flat sheave assembly with 140 mm delrin sheave
SH-F140A	flat sheave assembly with 140 mm aluminium sheave

100 and 140 mm bulkhead sheaves

The Jefa bulkhead sheaves are designed to be mounted on a bulkhead. The sheave can be rotated in 2 planes over 24 degrees and can be adapted for bulkheads from 10 mm to 30 mm. The Jefa bulkhead sheaves contain multiple parts made of aluminium extrusion profile. These housings are much stronger and reliable than casted aluminium housings. The sheave housing can contain a black delrin sheave or an aluminium sheave with a sealed ball bearing. (For outside use a special version with a stainless ball bearing is available at no surcharge, please note on order). The mounting of the sheave assembly is achieved by 4 off widely spread M8 bolts.
The 100 mm diameter sheave sets should be used with 5 mm steering wire. The 140 mm diameter sheaves should be used with 6 mm steering cable. It's not advisable to use 6 mm cable on the 100 sheaves as the cable will fatigue quickly due to the too small bending radius.

All Jefa open wire sheaves are CE approved. This means that the sheave set will be able to take more loading than the maximum breaking strength of the appropriate steering wire. Please click on the picture for a larger view.

General measurements

Jefa steering bulkhead sheaves for open wire systems.
Part No.	Description
SH-BH100D	bulkhead sheave assembly with 100 mm delrin sheave
SH-BH100A	bulkhead sheave assembly with 100 mm aluminium sheave
SH-BH140D	bulkhead sheave assembly with 140 mm delrin sheave
SH-BH140A	bulkhead sheave assembly with 140 mm aluminium sheave

100 and 140 mm self-aligning bulkhead sheaves

The Jefa self-aligning bulkhead sheaves are designed to be mounted on a bulkhead. The sheave can be rotated to align to the cable and can be adapted for bulkheads from 21 mm to 29 mm. The Jefa bulkhead sheaves contain multiple parts made of aluminium extrusion profile. These housings are much stronger and reliable than casted aluminium housings. The sheave housing can contain a black delrin sheave or an aluminium sheave with a sealed ball bearing. (For outside use a special version with a stainless ball bearing is available at no surcharge, please note on order). The mounting of the sheave assembly is achieved by 4 off widely spread M8 bolts.
The 100 mm diameter sheave sets should be used with 5 mm steering wire. The 140 mm diameter sheaves should be used with 6 mm steering cable. It's not advisable to use 6 mm cable on the 100 sheaves as the cable will fatigue quickly due to the too small bending radius.

All Jefa open wire sheaves are CE approved. This means that the sheave set will be able to take more loading than the maximum breaking strength of the appropriate steering wire. Please click on the picture for a larger view.

General measurements of 100 mm self-aligning bulkhead sheave

General measurements of 140 mm self-aligning bulkhead sheave

Jefa steering self-aligning bulkhead sheaves for open wire systems.
Part No.	Description
SH-BHSA100D	self-aligning bulkhead sheave assembly with 100 mm delrin sheave
SH-BHSA100A	self-aligning bulkhead sheave assembly with 100 mm aluminium sheave
SH-BHSA140D	self-aligning bulkhead sheave assembly with 140 mm delrin sheave
SH-BHSA140A	self-aligning bulkhead sheave assembly with 140 mm aluminium sheave