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The idlers are very important component of belt conveyor. They are present along the entire length of the conveyor, supporting the belt and moving the materials loaded on the belt. The idler’s diameter could be correctly selected to comply with the belt width and travel speed. The correct idler length could be selected according to belt width and rollers type. General steel idlers consist of idler shell, spindle, bearing, bearing house, seals and axial fixed units.
Conveyor rollers and frames conveyor belt rollers
Idlers consist of idler shell, spindle, bearing, bearing house, seals and axial clip. 

We adopt untouched multi-labyrinth seal structure, a complex, bend and narrowed labyrinth channel is formed between the inner seal and outer seal. The channel is illed with grease. Precisely designed and manufactured labyrinth seals are the guarantee on the normal running of the rollers. Its perfect water and dust proof and wear resistance effectively protect the bearing from being damaged. 

Our idlers choose C3 serials ball bearings, adopt double sealed structure to improve the water and dust proof ability.

Idler Shell, Spindle and Bearing House
The idler pipe and spindle comply with industry standard. The T’I’R, roundness, straightness and outline dimension comply with high grade requirement. The bearing house, stamped by good quality steel, is welded to idlers shell by automatic machine hand with precision which ensures the whole strength of the idlers.
roller inside structure

roller bearing and housing
Carry Idlers return idlers

Trough Idlers

A trough idler, which is the most common idlers used on high capacity belt conveyor, is mounted on the carrying side. Generally it consists of 3 rollers in equal length. The two outer rollers are inclined upward and the middle one is horizontal. The inclined degree can be 30°,35°and 45°, some can be up to 60° in suspended type. There are two basic types: standard type and ahead inclined type. The latter can also be present all through the conveyor to prevent the belt from sideslip.

Trough idlers

Self-aligning Idlers

The trainer idlers were fixed to keep belt running in correct line. When belt runs to one side, the structure frame will turn to opposite side.

self-aligning idlers

Self Cleaning Idlers

Self cleaning idlers are fixed on the return side of the conveyor to clean off the materials that stuck to the belt working surface. They could be identified as following types:
Flat Comb Type, V Comb Type and Flat Spiral Type. Generally, 1 set of spiral idlers would be set closed to the end drum and 5 or 6 sets of comb type return idlers followed.

self cleaning idlers

Impact Idlers

Impact idlers with rubber rings of high shock absorbing quality are fixed under the feed system. The rubber rings would absorb the impact by falling materials to prevent the belt and idler body from damaging.

impact idlers

Flat Return Idlers

They are adopted to support the conveyor belt on return side.

flat return idlers
Belt Width
Belt Width
500 76 200 1600 133 600
89 315 152 900
102 600 159 1800
108 194
650 76 250 1800 152 670
89 380 159
102 750 178
108 194
800 89 315 219
102 465 2000 152 750
108 950 159
127 178
133 194
1000 102 380 219
108 600 245
127 1150 2200 159 800
133 178
1200 127 465 194
133 700 219
152 1400 245
159 2400 159 900
1400 127 530
133 194
152 219
159 245


Idler frame
Idler Frame available on your request

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