Steel Roller

Parameter	Value
Product Name	Steel Roller for Conveyor System
Material & Belt Width	Carbon Steel; 500 – 2,400 mm
Service Life & Certification	> 50,000 hours; ISO 9001, CEMA, DIN
Applications	Mining, Cement, Port, Power Plants

ZOOMRY's steel conveyor rollers have been tried and tested in almost every imaginable application — from abrasive mining conveyors handling iron ore to high-speed port systems moving coal and grain. Each roller is manufactured from thick metal pressings MIG welded into ERW tubes, creating an incredibly strong design with low TIR (total indicator runout) for stable belt tracking.

Steel rollers are hard, heat resistant, and have a long service life — reducing replacement and maintenance costs. Unlike HDPE rollers which excel in corrosive environments, steel rollers are the preferred choice for high-load, high-impact applications where structural strength is critical.

ZOOMRY steel conveyor roller for mining and heavy-duty applications

ZOOMRY Steel Roller — Precision-Machined for High-Load belt conveyor Systems

Steel Roller vs HDPE Roller: Which Material to Choose?

Feature	Steel Roller	HDPE Roller
Load Capacity	High — ideal for heavy ore, coal, aggregates	Moderate — suited for lighter materials
Impact Resistance	Excellent — withstands large lump sizes and drop impacts	Good — absorbs shock but lower ultimate strength
Corrosion Resistance	Moderate — requires coating for wet environments	Excellent — naturally resistant to acids, alkalis, and salt
Service Life	50,000+ hours in standard applications	40,000+ hours — extends in corrosive environments
Best Application	Mining, Cement, Quarry	Fertilizer, Salt, coastal ports

Specifications

Series	Diameter (mm)	Shell Wall (mm)	Nominal Shaft Diameter (mm)	Bearing Part No.	Min Bearing Dynamic Load Rating (N)
20	89	3	20	6204 – 2RS	12,700
	102	3.5
	114	3.5
	127	3.8
25	102	3.5	25	6205 – 2RS	14,000
	114	3.5
	127	3.8
	133	4
	139	4
	152	4
	159	4
27	127	3.8	25	6305 – 2RS	22,500
	133	4
	139	4
	152	4
	159	4
32	127	3.8	30	6306 – 2RS	28,100
	133	4
	139	4
	152	4
	159	4
35	152	6	35	6307 – 2RS	33,200
	159	6
	178	6
40	152	6	40	6308-2RS	41,000
	159	6
	178	6
	193	6
		219	6
45	152	6	45	6309 – 2RS	52,700
	159	6
	178	6
		193	6
50	178	6	50	6310 – 2RS	61,800
50	193	6	50	6310 – 2RS	61,800
60	178	6	60	6312 – 2RS	81,900
60	219	6	60	6312 – 2RS	81,900

Eight Indicators to Measure Roller Quality

ZOOMRY steel rollers are tested against eight critical quality indicators to ensure reliable performance across all Conveyor idler applications:

Radial Runout — directly affects material conveying stability.
Axial String Momentum — directly affects roller service life.
Flexibility — affects roller life, belt life, and overall drive power consumption.
Waterproof Performance — IP66 sealing protects bearings in wet environments.
Dustproof Performance — prevents particle ingress that causes premature bearing failure.
Axial Bearing Capacity — ensures stable operation under heavy side loads.
Impact Resistance — withstands material drop at loading zones without deformation.
Rotation Resistance — low rolling resistance (≤2N) extends belt service life and reduces energy consumption.

ZOOMRY conveyor roller manufacturing quality control

Why Choose ZOOMRY Steel Rollers?

Highly competitive pricing with automatic production line efficiency.
Sealed-for-life ball bearings — maintenance-free operation.
Extremely low rolling resistance for lowest operator cost and energy savings up to 35%.
Products available for belt widths from 500 mm to 2,800 mm.
Compliant with CEMA, DIN, ISO, and GB standards — interchangeable globally.