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Disc harrows are widely used for secondary tillage, soil clod breaking, crop residue mixing and seedbed preparation.
In the agricultural machinery market, disc harrows are often described as light duty, medium duty or heavy duty according to frame structure, disc size, machine weight, working depth and intended field conditions.
These terms are useful for understanding different levels of disc harrow construction, but they do not automatically represent the current product range of every manufacturer.
HENAN BEST Machinery (BSM) currently focuses on mounted light duty disc harrows for smaller tractors and hydraulic folding disc harrows for medium and high horsepower tractors.
This guide explains the general differences between light, medium and heavy duty disc harrows, while also showing which current BSM products are available for different tractor and field conditions.
What Is a Disc Harrow Used For?
A disc harrow uses multiple concave steel discs to cut, break and mix the upper soil layer.
It is mainly used for:
- Breaking soil clods after ploughing
- Loosening cultivated topsoil
- Mixing crop residue into the soil surface
- Reducing roughness after primary tillage
- Removing light surface weeds
- Improving field uniformity
- Preparing soil before planting
A disc harrow should not be confused with a disc plough.
A disc plough is mainly used for deeper primary tillage and soil turning, while a disc harrow normally works in the upper soil layer for secondary preparation.
Light Duty vs Medium Duty vs Heavy Duty Disc Harrow
| Comparison | Light Duty | Medium Duty | Heavy Duty |
|---|---|---|---|
| Frame Structure | Light and compact | Stronger intermediate structure | Heavy reinforced frame |
| Disc Size | Usually smaller | Usually medium size | Usually larger |
| Machine Weight | Lower | Medium | Higher |
| Typical Soil Condition | Light or previously cultivated soil | Moderate soil conditions | Harder soil and heavier residue |
| Typical Farm Size | Small farms | Small-medium or medium farms | Medium-large and large farms |
| Main Advantage | Low tractor load and maneuverability | Balance between penetration and machine weight | Higher penetration and field capacity |
These descriptions are general industry classifications. They should not be treated as fixed horsepower rules or as a list of current BSM products.
What Is a Light Duty Disc Harrow?
A light duty disc harrow uses a relatively light frame and smaller disc blades.
It is mainly intended for previously cultivated soil and lighter secondary tillage.
Typical applications include:
- Small family farms
- Vegetable fields
- Orchards
- Narrow plots
- Light soil
- Shallow residue mixing
- Seedbed preparation after ploughing
Current BSM Mounted Light Duty Disc Harrow
The current BSM Mounted Light Duty Disc Harrow is designed for approximately 12HP to 60HP tractors.
The series uses a compact three-point mounted structure and is suitable for smaller tractors and fields where maneuverability is important.
Its main advantages include:
- Lower machine weight
- Lower rear-lift requirement
- Easy three-point connection
- Compact turning radius
- Convenient transport
- Practical operation on smaller fields
View BSM Mounted Light Duty Disc Harrow for 12-60HP Tractors
What Is a Medium Duty Disc Harrow?
In general agricultural machinery terminology, a medium duty disc harrow sits between light duty and heavy duty structures.
It normally has:
- A stronger frame than a light duty harrow
- Larger or heavier disc blades
- Greater machine weight
- Stronger soil penetration
- Higher tractor traction requirements
Typical applications may include:
- Previously ploughed medium soil
- Moderate crop residue
- General secondary tillage
- Medium-sized farming operations
Does BSM Currently Supply a Medium Duty Mounted Disc Harrow?
BSM previously offered a mounted medium duty disc harrow for this market segment.
That product series is no longer part of the current BSM sales range.
Therefore, buyers should not use the former medium duty product as the basis for a new quotation or tractor matching request.
Current buyers should instead choose between:
- Mounted Light Duty Disc Harrow for approximately 12-60HP tractors
- Hydraulic Folding Disc Harrow for approximately 45-160HP tractors
The correct direction depends on tractor configuration, soil condition, working width and farm size.
What Is a Heavy Duty Disc Harrow?
A heavy duty disc harrow uses a heavier reinforced frame, larger discs and greater total machine weight.
It is generally designed for:
- Harder soil
- More demanding secondary tillage
- Higher crop residue levels
- Larger fields
- Wider working widths
- Higher daily field capacity
Heavy duty structures usually require more tractor weight and pulling capacity than light mounted machines.
Hydraulic Folding Disc Harrow as the Current BSM Heavy-Duty Direction
The current BSM 1BJ Hydraulic Folding Disc Harrow covers approximately 45HP to 160HP tractors.
Depending on model, working width ranges from approximately 2.0m to 6.0m.
The trailed, hydraulic folding structure is designed for wider field coverage and easier transport between large fields.
View BSM Hydraulic Folding Disc Harrow for 45-160HP Tractors
BSM Hydraulic Folding Disc Harrow Model Range
| Model | Working Width | Disc Quantity | Approx. Weight | Reference Tractor Power |
|---|---|---|---|---|
| 1BJ-2.0 | 2000mm | 18 pcs | 860kg | 45-65HP |
| 1BJ-4.4 | 4400mm | 40 pcs | 1850kg | 75-100HP |
| 1BJ-4.8 | 4800mm | 44 pcs | 1950kg | 100-120HP |
| 1BJ-5.3 | 5300mm | 48 pcs | 2300kg | 140-150HP |
| 1BJ-6.0 | 6000mm | 56 pcs | 2600kg | 140-160HP |
These horsepower ranges are reference values. Final matching should also consider tractor weight, hydraulic system, soil resistance and working conditions.
How to Choose by Tractor Horsepower
| Tractor Power | Current BSM Direction | Typical Use |
|---|---|---|
| 12-25HP | Mounted Light Duty | Small plots, gardens and orchards |
| 25-40HP | Mounted Light Duty | Small farms and cultivated soil |
| 40-60HP | Mounted Light Duty or suitable compact Folding configuration | Choice depends on tractor weight and field size |
| 60-65HP | Lower-end Hydraulic Folding | Confirm traction and hydraulics |
| 70HP | Lower-end Hydraulic Folding direction | Do not automatically choose a wide or heavy model |
| 75-100HP | Hydraulic Folding | Medium and larger farms |
| 100-120HP | Hydraulic Folding | Higher-capacity field preparation |
| 140-160HP | Wide Hydraulic Folding | Large-scale field preparation |
What Disc Harrow Is Suitable for a 30HP Tractor?
A 30HP tractor is normally well matched with a suitable mounted light duty disc harrow.
The final width should depend on:
- Tractor weight
- Rear lifting capacity
- 2WD or 4WD configuration
- Soil resistance
- Field size
What Disc Harrow Is Suitable for a 50HP Tractor?
A 50HP tractor falls within the range of the current BSM Mounted Light Duty Disc Harrow.
It also falls within the lower published range of the Hydraulic Folding Disc Harrow Series.
For many small and medium farms, the mounted light duty option is still simpler and more maneuverable.
A compact folding configuration should only be considered after confirming:
- Tractor operating weight
- 4WD traction
- Hydraulic outlets
- Machine weight
- Field size
- Soil resistance
View BSM 50HP Four-Wheel Tractor
What Disc Harrow Is Suitable for a 70HP Tractor?
The current BSM Mounted Light Duty Disc Harrow has a stated upper range of approximately 60HP.
Therefore, a 70HP tractor should not be directed to the current light mounted series as the normal matching choice.
A suitable lower-end Hydraulic Folding Disc Harrow configuration is the more appropriate current BSM direction.
Because 70HP is still at the lower side of the folding series, buyers should carefully confirm:
- Tractor operating weight
- 4WD traction
- Hydraulic system
- Machine weight
- Working width
- Soil resistance
- Field slope
View BSM 70HP 4WD Farm Tractor
Read the Complete 70HP Tractor Implement Matching Guide
What Disc Harrow Is Suitable for an 80HP Tractor?
An 80HP 4WD tractor is more naturally matched with the Hydraulic Folding Disc Harrow range.
The final model should depend on:
- Working width
- Machine weight
- Soil hardness
- Hydraulic configuration
- Tractor traction
- Farm size
View BSM 80HP 4WD Farm Tractor
What Disc Harrow Is Suitable for a 100HP Tractor?
A 100HP tractor can be matched with medium-width hydraulic folding configurations.
The published 1BJ-4.4 falls within approximately 75-100HP, while the 1BJ-4.8 is positioned around 100-120HP.
Actual selection should still depend on tractor weight, soil hardness, hydraulic system and working depth.
View BSM 100HP Agricultural Tractor
How Soil Conditions Affect Disc Harrow Selection
Light or Previously Cultivated Soil
A mounted light duty disc harrow is often sufficient for cultivated soil, vegetable fields and lighter secondary preparation.
Moderate Soil
In general industry classification, a medium duty structure may be used for moderate soil conditions.
Because BSM no longer offers the former mounted medium duty series, current BSM buyers should evaluate whether the available light duty model is sufficient or whether a suitable hydraulic folding configuration is more appropriate.
Hard or Dry Soil
Hard or dry soil may require greater machine weight, stronger discs and more tractor traction.
If the field requires deep soil inversion, a disc plough or mouldboard plough may be more suitable before disc harrowing.
Wet or Soft Soil
Using an excessively heavy implement in wet soil can increase:
- Soil compaction
- Wheel slip
- Tractor sinking
- Fuel consumption
Machine weight should therefore be selected carefully.
Fields with More Crop Residue
More residue may require greater disc weight, suitable disc spacing and stronger cutting action.
A hydraulic folding disc harrow can be considered when the tractor and farm size justify the heavier structure.
2WD or 4WD Tractor for Disc Harrow Work?
Both 2WD and 4WD tractors can operate suitable disc harrows when correctly matched.
4WD normally provides advantages in:
- Harder soil
- Uneven fields
- Loose soil
- Sloping farmland
- Wider implements
- Higher daily working requirements
2WD may still be sufficient for lighter soil and compact mounted disc harrows.
Disc Harrow vs Disc Plough
| Comparison | Disc Harrow | Disc Plough |
|---|---|---|
| Main Function | Secondary tillage | Primary tillage |
| Soil Effect | Break, mix and level | Deeper soil cutting and turning |
| Typical Stage | After primary tillage | Earlier soil preparation stage |
| Typical Use | Clod breaking and residue mixing | Deep soil turning |
Disc Harrow vs Rotary Tiller
A disc harrow and rotary tiller also have different working effects.
A disc harrow is usually preferred for:
- Larger soil clods
- Surface residue mixing
- Wider secondary preparation
A rotary tiller is more suitable when a finer seedbed is required.
Read Rotary Tiller vs Disc Harrow: Which One Should You Choose?
Common Mistakes When Choosing a Disc Harrow
Choosing Only by Horsepower
Two tractors with the same horsepower may have different:
- Operating weight
- Hydraulic capacity
- Rear lifting capacity
- Tire configuration
- Traction
Selecting the Widest Model Possible
An oversized implement may reduce working speed, increase wheel slip and raise fuel consumption.
Ignoring Soil Conditions
A light duty harrow may perform well on cultivated soil but may not be suitable for hard or dry conditions.
Ignoring Transport Width
Large farms that move machines between fields should consider working width and transport width separately.
Using a Disc Harrow for Deep Primary Tillage
A disc harrow is mainly a secondary tillage implement.
For deeper soil turning, consider:
- Disc Plough
- Furrow Plough
- Mouldboard Plough
- Other suitable primary tillage equipment
Disc Harrow Selection Checklist
Before requesting a quotation, provide:
- Tractor model
- Tractor horsepower
- 2WD or 4WD
- Tractor operating weight
- Rear lifting capacity
- Hydraulic outlets
- Soil type
- Soil hardness
- Soil moisture
- Farm size
- Field shape
- Crop residue condition
- Preferred working width
- Required working depth
- Transport requirement
- Destination country
Frequently Asked Questions
What Disc Harrow Is Suitable for a 30HP Tractor?
A suitable mounted light duty disc harrow is normally the current BSM direction for a 30HP tractor.
What Disc Harrow Is Suitable for a 50HP Tractor?
A 50HP tractor can use a suitable mounted light duty disc harrow.
A compact hydraulic folding configuration may also be considered after confirming tractor weight, hydraulics, traction and field conditions.
Does BSM Still Sell the Former Medium Duty Mounted Disc Harrow?
No. The former BSM mounted medium duty series is no longer part of the current sales range.
Current buyers should consider the BSM Mounted Light Duty Disc Harrow or Hydraulic Folding Disc Harrow according to tractor and field requirements.
Can a 70HP Tractor Use a Disc Harrow?
Yes. A 70HP tractor can be considered for a suitable lower-end Hydraulic Folding Disc Harrow configuration.
Machine weight, hydraulics, traction and soil conditions must be checked before selection.
When Should I Choose a Heavy Duty Disc Harrow?
A heavier structure is more suitable when the farm requires:
- Harder secondary tillage
- More crop residue handling
- Wider working width
- Higher daily field capacity
- Large-area operation
Is a Hydraulic Folding Disc Harrow Suitable for a Small Farm?
Usually, a compact mounted light duty harrow is more convenient for smaller fields.
A folding machine becomes more useful when wider field capacity and transport between fields are important.
Current BSM Disc Harrow Options
Current BSM buyers can view the available disc harrow range here:
Final Recommendation
Choose a mounted light duty disc harrow for smaller tractors, lighter soil and compact fields.
The term medium duty disc harrow can still be useful as a general industry classification, but the former BSM mounted medium duty product is no longer part of the current sales range.
Choose a suitable hydraulic folding disc harrow when the farm requires greater machine weight, wider working width, higher daily field capacity or improved transport of a wide implement.
The final choice should always consider tractor horsepower, tractor weight, hydraulic system, soil condition, working width and farm size together.
Need Help Selecting a Disc Harrow?
HENAN BEST Machinery (BSM) can recommend a suitable current disc harrow configuration according to your tractor, farm size, soil conditions and required working width.
Email: devina@hnbestmachine.com
WhatsApp: +86 15637153018
Website: https://www.cnbsmtractor.com/
