Product Description
This combine harvester rasp bar assembly, also called a threshing beater bar, is a key wear part mounted on the threshing drum. The welded teeth or studs aggressively thresh grain from the crop head, while the reinforced mounting brackets ensure reliable attachment to the drum body.
We manufacture these bars as OEM replacement or custom-fit parts for combine harvester manufacturers and aftermarket distributors. Bar length, tooth profile, spacing, mounting hole pattern, and material grade can all be customized to your drawing or sample.
Specifications
| Item | Details |
|---|---|
| Product Name | Combine Harvester Rasp Bar Assembly / Threshing Beater Bar |
| Material | Mild steel bar, wear-resistant steel teeth (65Mn / NM400 optional) |
| Surface Treatment | Spray painting, powder coating, hot-dip galvanizing (HDG) optional |
| Bar Length | Custom per customer drawing, commonly 1,000 mm – 8,000 mm |
| Bar Profile | Square, rectangular, or round tube; custom profile accepted |
| Teeth / Studs | Welded wear teeth, twisted or straight type; spacing customizable |
| Mounting Brackets | Laser-cut steel plate, pre-drilled for bolt-on installation |
| Hole Pattern | Custom pitch and diameter to match customer drum |
| Color | Black, red, yellow, green, or per customer requirement |
| Process | Laser cutting, bending, machining, robotic/MIG/MAG welding, finishing |
| Certification | ISO 9001, ISO 3834, AWS D1.1, AS/NZS 4680 HDG available |
| Application | Combine harvester threshing drum, rice harvester, wheat harvester |
| Packaging | Pallet + steel frame / wooden crate, seaworthy export packing |
| Lead Time | Sample 15–25 days; bulk order 25–40 days after confirmation |
Applications
Mounted on combine harvester threshing drums
Rice, wheat, corn, soybean, and canola threshing systems
OEM replacement rasp bars for major harvester brands
Aftermarket agricultural machinery wear parts
Why Choose Us
Factory-direct OEM: 7,000 m² workshop in Qingdao with laser cutting, CNC bending, robotic/MIG/MAG welding, and machining.
Drawing-to-product: Send us your CAD drawing, sample, or model number; we build to spec.
Wear-resistant design: Optional 65Mn or NM400 teeth for longer service life in abrasive crop conditions.
Reliable welding: Certified welders and documented WPS/PQR for high-load agricultural parts.
Quality control: Material inspection, weld checking, dimensional verification, and pre-shipment inspection.
Need a different tooth profile or bar length? We can customize tooth shape, spacing, bar length, mounting hole pattern, and surface finish. Send your requirements for a fast quote.
FAQ
- Q1: What is a rasp bar assembly used for?
- A: A rasp bar assembly is mounted on the threshing drum of a combine harvester. Its welded teeth or studs strip grain from the crop head during threshing, making it a critical wear part in the harvester.
- Q2: Can you make rasp bars for specific harvester brands?
- A: Yes. We accept OEM orders based on your brand, model, drawing, or sample. We can reverse-engineer from photos or physical samples if drawings are not available.
- Q3: What materials are used?
- A: The main bar is usually high-strength structural steel. The teeth or studs can be made of wear-resistant steel such as 65Mn or NM400 to extend service life in abrasive harvesting conditions.
- Q4: Can I customize bar length, tooth spacing, and hole pattern?
- A: Yes. Bar length, profile, tooth shape, tooth spacing, mounting bracket design, and bolt hole pattern can all be customized to fit your threshing drum.
- Q5: What is your minimum order quantity?
- A: For standard designs, our MOQ is usually 20–50 pieces. For large custom bars or full sets, we can discuss based on production setup cost.
- Q6: How do you ensure weld strength?
- A: We use robotic or semi-automatic MIG/MAG welding with certified welders and documented WPS. All welds are visually inspected and spot-checked for dimensions.
- Q7: What surface finish do you recommend?
- A: Powder coating or spray painting is suitable for normal grain harvesting. For humid or corrosive conditions, we recommend hot-dip galvanizing (HDG) to AS/NZS 4680.
- Q8: How long is the lead time?
- A: Samples usually take 15–25 days after drawing confirmation. Bulk production lead time is typically 25–40 days depending on quantity and surface treatment.
- Q9: Do you sell complete threshing drum assemblies?
- A: Yes. Besides individual rasp bars and beater bars, we also supply complete threshing drum assemblies including drum frame, end discs, hub, and mounting hardware.
- Q10: How do I request a quote?
- A: Please send us the product drawing or sample photo, quantity, material requirement, color, and destination port. Our sales team will reply within 24 hours with a detailed quotation.
Contact for Quote
Qingdao Tianhua Yihe Metal Fabrication
Focus: OEM Sheet Metal Fabrication, Welded Structural Parts, Agricultural Machinery Components
Factory: 7,000 m² | Certifications: ISO 9001, ISO 3834, AWS D1.1, AS/NZS 4680 HDG
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