Dingtai manufactures precision Yanmar sprockets that drive rubber and steel tracks by transferring final drive torque directly to the track chain.
Factory-direct production with full OEM capability supports global distributors and equipment owners seeking dependable replacement sprockets for Yanmar compact excavators.
Hardened tooth profiles resist abrasive wear and tooth deformation, preventing track slippage, uneven chain stretch, and costly undercarriage downtime.
With over 20 years of undercarriage manufacturing and ISO9001/SGS certified processes, Dingtai delivers consistent metallurgy, dimensions, and heat treatment quality.
Premium 35MnB alloy steel and deep induction hardening create a tough core with high surface hardness for extended sprocket service life.
Core Selling Points
- Premium 35MnB Material: Sprocket blanks are forged from 35MnB alloy steel, offering high tensile strength and resistance to impact fatigue under heavy loads.
- Deep Quenching/Heat Treatment: Tooth surfaces receive deep induction hardening to HRC 50–55, producing a wear-resistant case while retaining a ductile core.
- Precision Forging/Casting: Near-net forging and CNC machining ensure accurate tooth pitch, bolt hole alignment, and true concentricity for Yanmar final drives.
- OEM Capabilities: We manufacture from OEM drawings or samples with custom dimensions, tooth counts, and bolt patterns to match original Yanmar specifications.
Our catalog of Yanmar Sprocket includes various specifications, fully compatible with Yanmar excavators and compact track loaders.
Why Choose Dingtai?
Production Technical Parameters
| Parameter | Specification |
|---|---|
| Material | 35MnB / 40Mn2 alloy steel |
| Tooth Surface Hardness | HRC 50–55 |
| Case Depth | 4–8 mm |
| Manufacturing Process | Precision forging, CNC machining, induction hardening |
| Certification | ISO9001, SGS |
| Warranty | 12 months / 2,000 operating hours |
OEM & Customization
We match OEM drawings, sample dimensions, tooth counts, and bolt patterns to produce exact Yanmar sprocket replacements under strict tolerance control.
Applicable Models
| Machine Type | Compatible Brands | Popular Series/Models |
|---|---|---|
| Mini Excavator | Yanmar | ViO17, ViO25, ViO35, ViO55, SV17, SV26 |
| Compact Excavator | Yanmar | ViO80, SV40, B50, B75 |
Delivery & Logistics
Closely packed and shipped by sea, air, or express. Factory-direct pricing and flexible MOQ support both stock orders and urgent replacement requirements.
Technical Features
Yanmar sprocket teeth are precision machined to match track chain pitch, preventing localized loading that accelerates chain bushing and idler wear.
Deep induction hardening creates a hard tooth surface with a tough core, resisting abrasive wear without becoming brittle under impact loading.
CNC-machined bolt holes and pilot bore guarantee accurate centering on the final drive, reducing vibration and protecting drive seals.
Applications
- Mining
- Road Construction
- Quarrying
- Demolition
- Utility Contracting
- Landscaping
- Agricultural Drainage
- Forestry
Frequently Asked Questions
Q: What is the MOQ for Yanmar sprockets?
A: Standard MOQ is 10 pieces per specification. Mixed Yanmar sprocket models may be combined to meet order volume.
Q: What is the delivery time?
A: Regular Yanmar sprocket specifications ship within 15–25 days. Custom production requires 30–40 days depending on quantity.
Q: What is the heat treatment depth?
A: Standard tooth surface hardness is HRC 50–55 with induction hardening case depth of 4–8 mm.
Q: What is the warranty policy?
A: Dingtai provides a 12-month or 2,000-hour warranty under normal operating conditions, whichever comes first.
Q: How do I confirm part number matching?
A: Provide the Yanmar OEM part number, machine model, or a dimensional drawing. We verify tooth count, pitch, bore, and bolt pattern.
Q: Can you produce custom Yanmar sprockets?
A: Yes. We manufacture from samples or CAD drawings to OEM tolerances, including custom tooth counts and bolt patterns.
Q: What materials are used?
A: Sprocket blanks use 35MnB or 40Mn2 alloy steel depending on model, selected for high tensile strength and wear resistance.
Q: Do you offer OEM packaging?
A: Neutral, Dingtai, or custom-branded packaging is available for OEM and distributor programs.
Maintenance Guide
- Inspect sprocket teeth every 250 service hours for sharpening, hooking, cracking, or uneven wear on the tooth flanks.
- Replace the sprocket and track chain together whenever pitch elongation exceeds 3% to avoid accelerated tooth and bushing wear.
- Torque all sprocket mounting bolts to Yanmar OEM specifications; recheck bolt tension after the first 50 hours of operation.
- Clean undercarriage components regularly to prevent packed debris from becoming abrasive against sprocket tooth surfaces and seals.
- Replace sprockets when tooth tip thickness is worn by more than 20% or when track slippage occurs under normal load.