This return roller belt conveyors adopts high-strength Q235B welded steel tube for roller shell, paired with solid 45# steel shaft and pre-greased sealed deep-groove ball bearings. Multi-level inner-outer labyrinth double-seal assembly achieves IP55 dust-proof and water-proof performance, and can steadily operate under ambient temperature ranging from -40℃ to 90℃. Surface treatment choices cover anti-rust spray paint, original black steel finish and rubber disc assembly for sticky residual-material working conditions.
Product Details
Roller Shell
Thick-walled Q235B welded carbon-steel tube, precision turning treatment to guarantee high concentricity and minimize radial run-out during continuous rotation.
Solid Steel Shaft
High-toughness 45# solid shaft with fine machined shaft end, excellent anti-bending property to adapt long-time cyclic load.
Sealed Bearing Unit
Deep-groove ball bearing pre-filled with long-term anti-aging grease, low rotation resistance to cut down whole-system power consumption.
Inner-outer Labyrinth Double-seal Structure
Multi-stage non-contact labyrinth barrier, effectively block mine dust, muddy water and fine debris from invading bearing cavity.
Optional Self-cleaning Rubber Disc
Detachable wear-resistant rubber discs can be assembled on roller surface to shake off sticky carry-back fines on belt underside.
Surface Finishing
Anti-rust painting, raw black steel finish optional; customized color is acceptable for special project demands.
Product Application
These return-side support rollers are extensively deployed in diversified bulk-material-handling industries. In coal and metal mines, they support empty belt circulation under heavy-dust underground or open-pit conditions. For quarry and aggregate plant, they serve gravel and stone-chip conveying lines. In cement and chemical factories, they match clinker and granular-material transportation systems. They are also widely applied at port terminals bulk-cargo unloading lines, power-plant ash-slag delivery and grain-processing conveying equipment.
FAQ
Q: What solution can be adopted if large amount sticky fines adhere to the belt return-side surface?
A: It is suggested to select rubber-disc self-cleaning version. Separated rubber discs can shake off sticky debris and reduce material accumulation on roller shell.
Q: What core specifications should be provided for quotation of return roller belt conveyor?
A: Please submit conveyor standard model, actual belt width, roller diameter & effective length, on-site working-environment condition and order quantity for accurate configuration and quotation.
Q: Can the factory supply matched metal mounting brackets together with these rollers?
A: Yes. Corresponding return-idler brackets with matched mounting hole dimensions can be manufactured. Rollers and brackets can be packed and shipped in one batch for convenient field assembling.
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