Description

The Bahco 3870-TENSION METER is a precision tension measuring tool designed for checking and adjusting the blade tension on bandsaw machines. Proper blade tension is essential for achieving straight cuts, improving blade life, reducing vibration, and minimizing operating costs.

The meter is suitable for use on most industrial and workshop bandsaws and is designed for quick, simple, and accurate tension measurement. It helps operators maintain the recommended tension range for different blade widths and machine types.

Main Features :

• Quick and accurate blade tension measurement
• Suitable for all types of bandsaws
• Helps improve cutting accuracy
• Extends blade lifespan
• Reduces blade drift and vibration
• Helps lower cost-per-cut
• Compact and portable design
• Easy dial-reading system with PSI and N/mm² conversion reference

Technical Summary :

Specification	Details
Product Name	Bahco 3870-TENSION METER
Product Type	Bandsaw Blade Tension Meter
Weight	680 g (24 oz)
Measurement Purpose	Blade tension checking
Compatible Machines	Most bandsaw machines
Reading System	Dial indicator with conversion table
Measurement Units	PSI and N/mm²
Application	Metal cutting and woodworking bandsaws

Why Blade Tension Matters

Correct blade tension is critical because it:

• Keeps the blade straight during cutting
• Prevents blade wandering or drifting
• Reduces tooth damage and blade breakage
• Improves cut quality and precision
• Reduces wear on machine bearings and guides
• Improves operator safety

Incorrect tension can cause:

• Crooked cuts
• Premature blade wear
• Excess vibration
• Blade slipping
• Machine damage

Working Principle :

The Bahco tension meter clamps onto the saw blade and measures blade strain through a dial indicator. The dial reading is then converted into actual tension values using Bahco’s conversion chart.

Example:

• Dial reading “34” ≈ 27,500 PSI
• Dial reading “50” ≈ 40,600 PSI

Recommended tension ranges vary depending on blade width:

• Small blades: 15,000–20,000 PSI
• Medium blades: up to 30,000 PSI
• Large blades: 30,000–38,000 PSI

Advantages :

Accuracy – Provides reliable tension settings compared with manual estimation.

Longer Blade Life – Avoids over-tensioning and under-tensioning that can damage blades.

Better Cutting Performance – Ensures smoother, straighter, and faster cuts.

Reduced Maintenance – Protects machine components such as wheels, bearings, and guides.

Typical Applications :

• Metal fabrication workshops
• Woodworking industries
• Tool rooms
• Industrial sawing operations
• Maintenance departments
• Precision cutting applications