Shipment Overview
ZM INDUSTRY CO., LTD. recently completed a bulk-vessel shipment of roller shafts and support rollers to a long-term mining customer in South Africa.
This combined order included precision-machined roller shafts and heavy-duty support rollers, both of which are essential components in hoisting systems, conveyor lines, and mineral-handling equipment commonly used across the South African mining sector.
Because the components were oversized and heavy, the buyer chose Break Bulk as the preferred shipping method. This ensured safer handling, reduced deformation risk, and easier unloading at the destination port-key advantages for large mining parts.
Product Strengths – Roller Shafts & Support Rollers
Support Roller
High Load Capacity & Exceptional Durability
The support rollers (also known as guide rollers or trolley rollers) were produced from certified 42CrMo4 / EN19 alloy steel.
- Superior bearing capacity for harsh mining environments
- Ra ≤ 3.2 surface finish
- Dynamic balancing (G6.3) for low vibration
- Heat treatment to hardness ≥ 230HB
- CNC machining ensures precise alignment with roller shafts
Roller Shaft
Precision & Stability Under Heavy Loads
The roller shafts supplied in this project were produced from AISI 1040 steel and manufactured strictly according to the customer's drawings.
- Tight concentricity & runout control
- Quenched and tempered hardness for long service life
- Full inspection documentation (chemical, mechanical, NDT, heat-treatment logs)
- Smooth operation in high-load conveyor and hoist lines
Why Break Bulk Shipping Was the Best Choice?
For heavy mining components like roller shafts and support rollers, Break Bulk shipping provides several practical benefits:
- No size restrictions as seen in containers
- Lower risk of bending or deformation during transportation
- Direct forklift/ crane handling reduces loading pressure
- Ideal for large-volume or mixed mining spare parts
- Faster unloading at South African ports equipped for heavy cargo
Professional Packaging for Heavy Mining Parts
ZM INDUSTRY CO., LTD provided full export-grade packaging including:
- Anti-rust and shock-absorbent protection
- Fumigation-free heavy wooden crates
- Steel-pallet bases for oversized rollers
- Clear shipping marks for easy unloading
- Moisture-resistant lining suitable for long ocean voyages
Inquiry Invitation
Whether you are sourcing roller shafts, support rollers, or other mining and conveying components, ZM INDUSTRY CO., LTD. is ready to support your project with professional manufacturing and dependable export service.
Our address
Head Office: 4#-1616, No.296 Liuquan Road, Zibo City, Shandong China
Branch Office: 208-7B, No.2 Penglai Road, Jianxi District, Luoyang City, Henan Province,China
Phone Number & Whatsapp
+8618606381772
sun@zmindu.cn
