We manufacture Volvo carrier rollers—also called top rollers—that support track frame weight and guide the track chain in the undercarriage system.
Factory direct manufacturing gives you comprehensive OEM services, from engineering support to final assembly, for Volvo machines and global distribution markets.
Our rollers resist tread wear and prevent track sag, reducing unplanned downtime and protecting the entire Volvo undercarriage from premature failure.
With over 20 years of engineering experience and ISO9001/SGS-certified systems, Dingtai delivers consistent quality expected by US procurement professionals.
We use 35MnB material and deep induction hardening to produce rollers with high surface hardness and superior structural toughness under load.
Core Selling Points
- Premium 35MnB Material: Forged 35MnB steel construction delivers high impact strength and long service life in demanding Volvo excavator applications.
- Deep Quenching/Heat Treatment: Induction hardening creates a deep, uniform hardened layer for excellent wear resistance and reduced shell cracking on roller treads.
- 100% QC Inspection: Every Volvo carrier roller passes dimensional, hardness, and run-out checks before shipment, ensuring zero-defect delivery to your warehouse.
- OEM Capabilities: We manufacture exact-fit Volvo carrier rollers from your part number, drawing, or sample, with private-label packaging available.
Our catalog of Volvo Carrier Roller includes various specifications, fully compatible with Volvo excavators and tracked machines.
Why Choose Dingtai?
1. Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB alloy steel / custom material on request |
| Surface Hardness | HRC 52–58 |
| Core Hardness | HB 220–280 |
| Heat Treatment | Deep induction hardening / quench and temper |
| Machining Process | CNC turning, grinding, boring |
| Certification | ISO9001, SGS material report |
| Warranty | 18 months or 2,000 working hours |
2. OEM & Customization
We manufacture carrier rollers to exact Volvo drawings or samples, custom dimensions, and strict OEM tolerance, ensuring direct bolt-on replacement.
3. Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Compact Crawler Excavator | Volvo | EC140, EC160, EC180 |
| Medium Crawler Excavator | Volvo | EC210, EC240, EC290 |
| Large Crawler Excavator | Volvo | EC360, EC460, EC480, EC750 |
4. Delivery & Logistics
Factory-direct pricing and low MOQ support flexible trial orders. We pack pallets securely and ship via reliable sea or air freight.
Technical Features
The carrier roller shell is forged from 35MnB steel, aligning grain structure and eliminating stress concentrations that cause premature roller failure.
A dual-cone floating seal prevents dirt and moisture ingress while retaining internal lubricant, ensuring smooth rotation in abrasive working conditions.
Precision-machined shaft seats and bimetal bushings distribute load evenly, reducing friction, heat, and wear on Volvo undercarriage systems.
Applications
- Quarrying and aggregate processing
- Mining and heavy earthmoving
- Road construction and highway infrastructure
- Demolition and forestry operations
- Large-scale site preparation and grading
Frequently Asked Questions
1. What is the minimum order quantity (MOQ) for Volvo carrier rollers?
Standard models typically require 20 pieces per part number. Mixed containers and trial orders can be arranged for new customers.
2. Can you match original Volvo part numbers?
Yes. Supply your Volvo OEM part number, drawing, or sample, and we will confirm dimensions and mounting compatibility before production.
3. How deep is the heat treatment layer on the roller tread?
The induction-hardened layer is generally 8–15 mm deep, providing high surface hardness while maintaining core toughness.
4. What material is used in the carrier rollers?
We use 35MnB alloy steel for the roller shell and shaft, which provides high strength and resistance to impact and wear.
5. What is the delivery time for a standard Volvo carrier roller order?
Standard Volvo carrier rollers ship within 15–25 working days after deposit. Customized or high-volume orders may take 30–45 days.
6. Do you provide warranty coverage?
Yes, we offer an 18-month or 2,000-working-hour warranty against manufacturing defects under normal loading conditions.
7. Which Volvo excavator models are compatible?
We supply carrier rollers for Volvo EC140, EC160, EC180, EC210, EC240, EC290, EC360, EC460, EC480, and EC750 series.
8. Can you provide private labeling or neutral packaging?
Yes, OEM and private-label packaging are available for distributors and importers. We can print your brand on the packaging.
Maintenance Guide
- Inspection: Check roller tread wear, oil leakage, and side wobble every 500 operating hours under normal conditions.
- Installation: Clean mounting surfaces and torque bolts to Volvo specifications to prevent loosening during high-vibration operation.
- Lubrication: Verify internal oil level during assembly; do not mix grease types if equipped with sealed lubrication system.
- Replacement: Replace rollers when tread wear reaches 25% of original thickness or when bearing play exceeds allowable tolerance.