Drawbar triangles

Design Types and Categories of Three-Point Linkage Triangles

Three-point linkage triangles are available in different categories matched to the tractor linkage system:

• Three-point linkage triangle Cat 1 – typically for compact tractors
• Three-point linkage triangle Cat 2 – for mid-range tractors in field and grassland use

The category determines pin diameter and mounting width. Incorrect selection leads to play in the lower link area or excessive stress on pins and bushings.

An anti-rotation design prevents unintended twisting during operation, especially with heavy implements or variable lateral loads. Models with ball head allow greater flexibility.

Selection Criteria for Practical Use

The selection of a suitable triangle should consider:

• Category matching the tractor linkage
• Material thickness and weld quality
• Load capacity relative to implement weight
• Design (rigid, anti-rotation, ball head)
• Corrosion protection (painted or galvanized)

For intensive use, such as front loader work or heavy tillage equipment, a reinforced version is recommended.

Anti-Rotation and Ball Head – Technical Differences

An anti-rotation triangle improves tracking stability and reduces impact loads on lower links and hooks.

The ball head version provides greater articulation across varying angles, suitable for uneven terrain or oscillating implements.

Additional components such as lower link parts, top links and hooks are available within the three-point accessory range, along with hydraulic components for complete compliant solutions.

Material Quality and Load Capacity

These components are exposed to high dynamic forces. Besides tensile loads, impact forces occur during turning or lifting heavy equipment. Key factors are:

• High-strength steel grades
• Clean weld seams
• Precision drilling
• Accurate pin mount dimensions

Solid construction reduces long-term maintenance and spare part requirements.

Regularly inspected lower link pins and suitable safety elements are recommended.

Which category do I need – Cat 1 or Cat 2?

The category depends on the tractor’s linkage specifications, including pin diameter and mounting width.

When is an anti-rotation triangle advisable?

For heavy or laterally stressed implements, anti-rotation reduces twisting and wear.

What is the advantage of a ball head?

A ball head allows greater operational movement, beneficial on uneven terrain.