Types of Crimping Applicators: How to Choose the Right One

A crimping applicator is the precision tooling that mounts on a crimping press to produce consistent, high-quality terminal crimps. The applicator holds the crimping dies, feeds terminals from a strip reel, and indexes the next terminal into position after each press stroke.

Choosing the right applicator depends on your terminal type, wire gauge range, production volume, and press specifications. This guide covers the main categories and selection criteria.

Classification by Drive Mechanism

Mechanical Crimping Applicators

Mechanical applicators are driven by the press ram — the press provides all the force, and the applicator converts that linear motion into the crimping action. They are the most common type in wire harness manufacturing.

Advantages:

• No external power source beyond the press
• Simple, reliable mechanism with fewer moving parts
• Lower maintenance requirements
• Consistent crimp quality through mechanical precision
• Quick-change crimper sets for fast terminal changeovers

Best for: Standard wire harness production with wire gauges from 0.35 mm2 to 6 mm2, covering the vast majority of automotive, appliance, and control panel applications.

AMT’s mechanical applicator range includes the Unique S/F, Unique E/F, RXA S/F, RXA E/F, and Regular models.

Pneumatic Crimping Applicators

Pneumatic applicators use compressed air to provide additional force or to drive the crimping action independently of a mechanical press. They handle larger wire gauges and heavier-duty crimping that exceeds the capacity of standard bench presses.

Advantages:

• Higher crimping force for larger conductors (10-20 mm2 and above)
• Can handle closed tube terminals without applicator changeover
• Reduced operator fatigue — the air cylinder does the work
• Adjustable force via air pressure regulation

Best for: Larger wire gauges (10-20 mm2), power cable terminals, closed tube terminals, and applications requiring higher crimping force.

AMT’s Pneumatic Crimping Applicator weighs 6.5 kg, handles wire ranges of 10-20 mm2, and eliminates applicator changes for closed tube terminal sizes 10-12.

Classification by Terminal Feed Direction

Side Feed Applicators

The terminal strip feeds into the crimping zone from the side — perpendicular to the wire insertion direction. The most common configuration in automotive wire harness production.

End Feed Applicators

The terminal strip feeds parallel to the wire direction. Used when the terminal strip orientation or workspace constraints require axial feeding.

For a detailed comparison of these two types, see our article on side feed vs end feed applicators.

Key Specifications to Understand

Shut Height

The shut height is the distance from the base of the applicator to the top of the ram adapter when the press is at the bottom of its stroke. This must match your press specification.

Common shut heights:

• 135 mm — standard for many bench presses; used by AMT’s RXA and Regular series
• 155 mm — taller configuration; used by AMT’s Unique S/F model

Stroke

The stroke is the vertical travel distance of the press ram. AMT applicators are designed for presses with 30-40 mm stroke, which covers the most common bench press models.

Crimper Set

The crimper set consists of the crimp die (upper tooling) and anvil (lower tooling) that form the actual crimp profile. Different terminal types require different crimper sets.

A key feature of modern applicators is quick-change crimper sets — the ability to swap the die and anvil in minutes without removing the applicator from the press. All AMT applicators feature this capability.

Wire Range

Each crimper set is designed for a specific range of wire gauges and terminal sizes. Matching the wire gauge to the correct crimper set is essential for crimp quality.

How to Select the Right Applicator

1. Identify Your Terminal Type

Start with the terminal you need to crimp. The terminal manufacturer’s specification sheet will tell you:

• Feed type required (side feed or end feed)
• Recommended applicator shut height and stroke
• Compatible die/anvil part numbers

2. Check Press Compatibility

Your applicator must be compatible with your bench press:

• Shut height — must match exactly
• Stroke — applicator must work within your press stroke range
• Tonnage — press must deliver sufficient force for the terminal and wire combination
• Ram adapter — mounting interface must match

3. Consider Wire Gauge Range

If you work with standard automotive wire gauges (0.35-6 mm2), a mechanical applicator handles everything. For heavier wire (10-20 mm2), consider a pneumatic applicator.

4. Evaluate Production Volume

Volume	Recommended Setup
Prototype / low volume	Hand crimping tool
Medium volume (1,000-10,000/day)	Bench press + mechanical applicator
High volume (10,000+/day)	Bench press + applicator with CFM, or fully automatic machine

5. Assess Changeover Frequency

If you switch terminal types frequently during a shift, prioritize applicators with quick-change crimper sets. This reduces changeover time from 30+ minutes to under 5 minutes.

6. Factor in Spare Parts Availability

Crimper sets, feed fingers, L stoppers, cutter boxes, and blades are wear items that need periodic replacement. Choose an applicator from a manufacturer that stocks spare parts and provides timely support.

AMT stocks all spare parts for its applicator range — including Unique, Regular, RXA, and Flag crimper sets, feed fingers, L stoppers, A and B cutter boxes, blades, wire cutting blades, and wire stripping blades.

AMT Applicator Comparison

Model	Type	Feed	Weight	Shut Height	Stroke	Wire Range	Best For
Unique S/F	Mechanical	Side	5.5 kg	155 mm	30-40 mm	Standard	Flagship side-feed, heaviest build
Unique E/F	Mechanical	End	4.7 kg	135 mm	30-40 mm	Standard	End-feed terminals
RXA S/F	Mechanical	Side	4.7 kg	135 mm	30-40 mm	Standard	Compact side-feed
RXA E/F	Mechanical	End	4.7 kg	135 mm	30-40 mm	Standard	Compact end-feed
Regular	Mechanical	—	4.7 kg	135 mm	30-40 mm	Standard	Cost-effective baseline
Pneumatic	Pneumatic	—	6.5 kg	—	—	10-20 mm2	Larger conductors, closed tube terminals

Maintaining Your Applicator

Proper maintenance extends applicator life and ensures consistent crimp quality:

• Inspect crimper sets for wear after every 50,000-100,000 crimps
• Clean the feed track to prevent terminal strip jams
• Lubricate moving parts per the manufacturer’s schedule
• Check die alignment regularly — misalignment causes asymmetric crimps
• Replace worn blades promptly — dull blades cause incomplete terminal separation

Conclusion

The right crimping applicator is the foundation of consistent crimp quality. Match the applicator to your terminal type, press specification, and production volume. For standard wire harness manufacturing, a mechanical side-feed or end-feed applicator on a bench press covers the vast majority of applications.

Anjali Machine Tools manufactures a complete range of crimping applicators in Pune, India. With quick-change crimper sets, adjustable crimp loads, and ready spare parts availability, our applicators serve 500+ clients across automotive, electrical, and appliance industries. View our full product range or request a quote.