Built for harsh conditions – tight sealing, smooth running, long service life.

The ST-Idler PRO is engineered for demanding environments such as mining and bulk-material handling.
Its optimized sealing package (labyrinth system plus protective elements) helps keep dust, water and slurry away from the bearings and internal components. Combined with quality parts, continuous welding and controlled coating options, it delivers reliable performance and extended lifetime in continuous operation.

Technical data summary:
Roller Ø: 108 mm
RL (Roll Length): 315 mm
Shaft: Ø20 mm, C45 steel
Tube: ERW steel tube (200–350), per BS1387:1995 / GB/T13793:2008 or equivalent
Housing: SPHC/SPCC (JIS G3131 or equivalent)
Bearings: ZZ C3 deep-groove ball bearings
Sealing: labyrinth + rear seal + outer shields (nylon) + NBR lip seal
Weld: continuous fillet weld 3–4 mm
Operating temperature: –20 °C to +100 °C
Max radial runout: 0.6 mm
Max torque: 3.6 N·m
Corrosion protection: anti-rust oil / alkyd paint / powder coating
Coating thickness: primer + topcoat ≥ 75 μm

The SolidTechnics Advantage:

Our Premium All-In Sourcing Package ensures:

• On-site quality control
• Professional project management
• Reliable delivery and logistics
• Full transparency and communication