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.

General measurements of the upright sheaves

DATA TABLE

Jefa steering upright sheaves for open wire systems.

Part No.Description
SH-UP100Dupright sheave assembly with 100 mm delrin sheave
SH-UP100Aupright sheave assembly with 100 mm aluminium sheave
SH-UP140Dupright sheave assembly with 140 mm delrin sheave
SH-UP140Aupright 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.

General measurements of 100 mm articulated sheave

General measurements of 140 mm articulated sheave

DATA TABLE

Jefa steering articulated sheaves for open wire systems.

Part No.Description
SH-A100Darticulated sheave assembly with 100 mm delrin sheave
SH-A100Aarticulated sheave assembly with 100 mm aluminium sheave
SH-A140Darticulated sheave assembly with 140 mm delrin sheave
SH-A140Aarticulated 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

DATA TABLE

Jefa steering flat sheaves for open wire systems.

Part No.Description
SH-F100Dflat sheave assembly with 100 mm delrin sheave
SH-F100Aflat sheave assembly with 100 mm aluminium sheave
SH-F140Dflat sheave assembly with 140 mm delrin sheave
SH-F140Aflat 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

DATA TABLE

Jefa steering bulkhead sheaves for open wire systems.

Part No.Description
SH-BH100Dbulkhead sheave assembly with 100 mm delrin sheave
SH-BH100Abulkhead sheave assembly with 100 mm aluminium sheave
SH-BH140Dbulkhead sheave assembly with 140 mm delrin sheave
SH-BH140Abulkhead 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

DATA TABLE

Jefa steering self-aligning bulkhead sheaves for open wire systems.

Part No.Description
SH-BHSA100Dself-aligning bulkhead sheave assembly with 100 mm delrin sheave
SH-BHSA100Aself-aligning bulkhead sheave assembly with 100 mm aluminium sheave
SH-BHSA140Dself-aligning bulkhead sheave assembly with 140 mm delrin sheave
SH-BHSA140Aself-aligning bulkhead sheave assembly with 140 mm aluminium sheave

Art. 11239