Our straw chopper knives are manufactured to extremely tight tolerances to prevent unnecessary vibration in the straw chopper as it spins at 3600RPM. Vibration can be extremely expensive; Leading to premature failure of the chopper housing and straw hood as well as the drive belt.
As corn or sunflower harvest different from all other crops we offer specially designed knives for corn harvest which can withstand even heavy impacts from corn cobs. Of course those knives can also be used for any other crop. And of course all knives are available for our different chopper types standard and premium straw chopper.
Combine straw choper knife:
1. Stable Ratation
2. Good heat treatment
3. Safe use
4. Excellent apperance
Quality point for the straw choper knife:

1. The weight tolerance between different knives must be ± 6g, to keep the Stable Ratation.
2. How to keep good quality:
1) cut the raw material according to the pattern of steel, and the knife length direction must be along the pattern such as below, or it will be easily brocken;
2) Heat treatment: Firstly, increase the hardness by integral quenching, then tempering to 25-30 HRC, finally add the cutting edge hardness to 50-55HRC by high-frequency quenching.
We use salt bath quenching, by which the temperature is more homogeneous
3) Chambering in the hole or add a bushing in the hole. That's because the hold is tapered after the punching, it will abrade the hold the matched parts.
4) Good package to guarantee the quality during shipment
Other kind of straw choper knife:
Company Introduction
We are specialized in supply of spare parts for combine harvesters. Theses products are exported to the each corner of the globe. Our annual sales volume exceeds $7million.

Our Product Range
Our main products include knife section, knife guard, rasp bar, agricultural belt, agricultural chain, gears, shafts, harrow disc, spring tine, sprocket, pulley, ball joint, knife head, agricultural bearings and so on. They are mainly used in John Deere, New Holland, Claas, MF combines. All kinds of ball and roller bearings are our 2ND main business. EMQ bearings, linear bearing and ceramic bearings are our advantages.

Why Choose Us
We refuse low quality products. This is the key to our success. Customer satisfaction is our target. To ensure this, a sophisticated quality control policy is enforced in every phase of our transactions. Sealed samples of consignments are well kept for further track. But we are committed not only to meeting the demands of customers, but also suggesting ways to improve products' functions. With this superior and exceptional service, we are well developed along with our customers. Expertise and know-how ensure that we are always enjoying the trust from our customers in our business activities. "Quality", "honesty" and "service" is our principle. Our loyalty and commitments remain respectfully at your service.

More than 10 years' experience on offering high quality agricultural parts for John Deere, Claas, maschio. It makes us better know the technology and services. Please don't hesitate to contact us for professional supports. A wide arrange of parts can't be listed here, please visit our website(combineparts. Cn) for detailed E-catalog.
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