A8 / A8M Replacement Chipper Knives for Brush Chippers

 

 

A8 chipper knives are commonly used on brush chippers, wood chippers and tree care equipment where the blade needs both wear resistance and impact toughness.

 

For brush chipping work, the knife often cuts branches, mixed wood, pruning waste and other uneven material. The blade may face impact, dirt, changing feed conditions and repeated sharpening. This is why many customers choose A8 or A8M steel for regular chipper knife replacement.

 

We produce A8 chipper knives in standard and custom sizes. All steel A8 knives and A8 inlay options are available depending on the working condition and cost target.

 

 

Product	A8 Chipper Knife
Regular Size	258 × 75 × 6 mm
Material	A8
Hardness	55–57 HRC
Edge Angle	30°
Application	Wood chipping
Lead Time	About 1–1.5 months
Options	All steel / A8 inlay

 

Tolerance

Length	±1 mm
Width	±0.5 mm
Thickness	±0.15 mm

 

 

A8 / A8M steel is often selected because it gives a practical balance between edge life and impact resistance. For chipper knives, hardness alone is not enough. The blade also needs enough toughness to handle shock during cutting.

 

 

 

The following are some regular A8 chipper knife sizes we have produced before. Other sizes can be made according to drawing, sample or machine requirement.

 

173 × 70 × 6	258 × 75 × 6
550 × 210 × 20	666 × 189 × 10
576 × 60 × 6	396 × 220 × 15
139 × 56 × 8	267 × 45 × 13
600 × 185 × 20	720 × 150 × 12
780 × 220 × 20	830 × 120 × 20
780 × 100 × 20	830 × 210 × 20
300 × 100 × 5	930 × 120 × 20
208 × 60 × 5	930 × 210 × 20
430 × 150 × 16	400 × 135 × 14

 

 

A8 / A8M chipper knives are often used in regular brush chipping and wood chipping jobs where the material is not always clean or uniform.

 

Working Condition	Why A8 / A8M May Help
Branch cutting	Needs edge holding and toughness
Brush chipping	Handles uneven material during feeding
Tree care work	Suitable for frequent sharpening and replacement
Landscaping waste	Practical for mixed outdoor wood material
Light wood recycling	Can handle moderate impact and wear
General wood chipping	Balanced material for daily use

 

 

For A8 chipper knives, material source and heat treatment are important. The same steel grade may perform differently if hardness or heat treatment is not well controlled.

 

• Formal material source
• Suitable hardness range
• Heat treatment stability
• Edge toughness
• Wear resistance
• Dimensional control after processing
• Final quality inspection before shipment

 

With long-term heat treatment experience, we can adjust hardness according to the application when needed. If customers are not sure which material is suitable, we can recommend an economical and practical option based on the cutting material and current blade problem.

 

 

Different materials have different strengths. A8 / A8M is not the only option, but it is a practical choice when the customer wants a balance between toughness, wear resistance and cost.

 

Material	Typical Feature
A8 / A8M	Balanced toughness and wear resistance
D2	Higher wear resistance, but less suitable for some impact conditions
HSS	Good cutting performance for selected applications
Alloy Steel	Cost-effective for general use
A8 Inlay	A8 edge with another body material for cost control

 

If your current blade breaks, chips, wears too fast or becomes dull quickly, the material and hardness should be checked together instead of changing only the steel grade.

 

 

A8 chipper knives are packed carefully to reduce damage during transportation.

 

• Oil paper wrapping
• Bubble wrap filling
• Strong wooden case
• Edge protection if needed
• Export packing for long-distance transport

 

 

 

This helps us decide whether A8 / A8M is suitable, or whether another material option should be considered.

 

 

• Can you etch words or markings on the blade?

Yes. We can discuss blade marking, part number, size marking or customer marking according to the order requirement.

 

• What if we do not know the knife material?

You can tell us the application, machine type, cutting material and current blade problem. We can recommend a suitable material based on experience.

 

• Do you have stock?

For some standard knives, stock may be available. We will check according to the size, material and quantity you need.

 

• When can we get the knives?

After payment, confirmed sales details and drawing approval, production usually takes around 30–50 days depending on quantity and difficulty.

 

 

If you are considering A8 or A8M chipper knives, send us your current blade details and working condition. We can check the size, material, hardness and edge design, then suggest a practical production option.

 

Hot Tags: A8 chipper knives; A8M chipper blades; A8 steel chipper knives; modified A8 chipper knives; A8 replacement chipper blades; A8 brush chipper knives; A8 wood chipper blades, Chipper knife