SN-2549 NON INSULATED TERMINAL CRIMPING TOOL
SN-2549 NON INSULATED TERMINAL CRIMPING TOOL – Precision Ratcheting Wire Crimper
The SN-2549 NON INSULATED TERMINAL CRIMPING TOOL is a high-precision, ratcheting hand crimper specifically designed for open-barrel non-insulated terminals, connectors, and pin contacts. Combining the capacities of traditional SN-28B and SN-01BM jaws into a single, versatile tool, it supports a wide wire gauge range from 0.08 mm2 to 1.0 mm2 (AWG 28 to AWG 18). It is an essential crimping tool for custom cable harness building, automotive wiring repairs, robotics projects, and electronics prototyping.
Constructed from high-strength manganese steel with precision wire-electrode cutting (EDM) dies, the SN-2549 NON INSULATED TERMINAL CRIMPING TOOL executes clean, double-crimp profiles (simultaneously crimping the wire conductor and insulation support). Its self-releasing ratchet mechanism ensures a full crimp cycle is completed before releasing, delivering uniform, gas-tight mechanical and electrical connections across every terminal.
As illustrated in the product image, the tool features a heavy-duty steel frame, an adjustable pressure star-wheel dial, polished multi-nested crimping dies, and vibrant blue ergonomic handles printed with “SN-2549 FOR NON-INSULATED TERMINAL 0.08-1MM² (AWG 28-18)”.
Key Features of the SN-2549 NON INSULATED TERMINAL CRIMPING TOOL
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Dual Capacity Profile (SN-28B + SN-01BM): Combines multiple jaw sizes to handle tiny micro-pitch pins as well as larger standard open-barrel terminals (0.08–1.0 mm2).
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Precision Wire-EDM Machined Dies: Features custom-contoured jaw nests that bend terminal wings inward into a tight, professional “B-crimp” profile without over-crushing conductor strands.
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Integrated Ratchet Safety Mechanism: Ensures full compression force is applied; the handles will not disengage until the crimping cycle is completely executed.
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Adjustable Pressure Dial: Includes a star-wheel adjustment disc with a lock screw to fine-tune crimping force based on terminal wall thickness.
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Ergonomic Cushion Grips: Non-slip blue plastic-molded handles offer enhanced grip leverage and reduce hand strain during high-volume production work.
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Quick-Release Lever: Allows the user to override and release the jaw mechanism mid-cycle in the event of terminal misplacement.
Common Applications and Practical Usage
The precision and versatility of the SN-2549 NON INSULATED TERMINAL CRIMPING TOOL make it a staple tool across various electrical and electronic fields:
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Custom Electronics & Prototyping: Ideal for crimping DuPont 2.54mm, JST-XH, JST-SM, KF2510, and Molex KK series pin connectors onto circuit board headers.
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Automotive & Motorcycle Wiring: Prepares open-barrel spade terminals, bullet connectors, and ecu harness pins for vehicle restoration and aftermarket electronics.
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3D Printers & Robotics: Serves as the primary tool for custom cabling, motor wiring, and sensor wire termination on CNC machines, 3D printers, and RC models.
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Industrial Control Cabinets: Connects uninsulated female/male tab disconnects and open-barrel wire lugs to control panel relays.
Technical Specifications
The core structural, physical, and functional parameters for the SN-2549 NON INSULATED TERMINAL CRIMPING TOOL are detailed below:
| Parameter Specification | Technical Details & Operational Values |
| Component Classification | Ratcheting Open-Barrel Wire Terminal Crimper |
| Primary Target Keyword | SN-2549 NON INSULATED TERMINAL CRIMPING TOOL |
| Model Number | SN-2549 |
| Capacity / Wire Gauge Range | 0.08 mm2 to 1.0 mm2 (AWG 28 to 18) |
| Applicable Terminal Types | DuPont 2.54mm, JST (XH, SM, SYP), Molex, D-Sub, Open-Barrel Tabs |
| Crimping Profile | Double-Crimp “B” Profile (Conductor + Insulation Grip) |
| Jaw / Die Material | High-Grade Alloy Steel (Wire EDM Processed) |
| Frame Material | Special Manganese Carbon Steel |
| Handle Material & Color | Durable Non-Slip TPR/PVC (Blue) |
| Overall Length (L) | Approx. 190 mm (7.5 inches) |
| Weight | Approx. 350 g (0.77 lbs) |
Operating Guidelines and Usage Tips
CRIMPING TIP: Place the uninsulated terminal into the correct jaw nest first, lightly close the ratchet one click to hold it in place, then strip 3 mm of wire and insert it fully before squeezing the handles completely.
Adjusting Crimp Force: If the crimped terminal feels loose or overly flattened, loosen the lock screw on the star wheel and rotate towards
+(to increase pressure) or-(to decrease pressure).Die Maintenance: Periodically wipe down the EDM steel dies with light machine oil to prevent surface rust and ensure smooth terminal ejection.
To review official dimensional standards and wire harness assembly guidelines for open-barrel crimp connectors, consult the IPC/WHMA-A-620 Cable Assembly Standard Directory.
To check regional warehouse inventory availability or request commercial quotes for volume assembly tools, visit the Control Qatar Contact Page.
