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The E Steel cord tension member

The E Steel cord tension member

Highly flexible tension inserts – the E Steel cord tension member

The thinner the single wire, the more flexible the
overall tension member! This interrelation led BRECO®
to develop BRECO® and BRECOFLEX® timing belts with
E tension members.
In the E tension member the cord cross-section is
distributed to a greater number of thinner individual
wires and, therefore, the bending fatigues are markedly
lower. The major advantage of the E tension members is
higher flexibility.
This is especially important, when smaller mounting
dimensions for pulleys and tension rollers are required.
The minimum number of teeth and/or minimum
diameter of the pulleys can be up to 30% less,
compared with standard tension members.
Timing belts with E tension members are recommended
for multi-shaft drives with frequent bends.

Summary

• Thinner individual wires in the Steel cord
• Higher dynamic capabilities
• Extremely high bonding and bending fatigue strength
• Smaller pulley and tension roller diameter
• No correction of the synchronising
pulleys are necessary

Available versions

• For the pitches AT3 (as standard), AT5, AT10, ATP10, T5, T10, T20 (option)

Application information: For intended application under extreme
conditions please contact our Technical Department for advice.
Steel cord tension members (Example):

Standard
tension member

‘E’ tension
member

The thinner the individual wire the more flexible the whole timing belt.

Type Drive Value T5 T10 T20 AT3 AT5 AT10 ATP10
Pulley zmin
Idler dmin
(mm)
10 12 15 15 12 12 12
18 50 80 20 18 50 50
Pulley zmin
Idler dmin
(mm)
15 15 20 20 20 20 20
18 50 120 20 50 80 80

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