Break Seized Chain Pins Fast — No Torches. No Hammering.
Jammed chain pins underground halt production instantly and demand fast, safe removal.
Why Pins Jam in Mining
Underground heat, dust, and abrasion load the joints until the pin locks solid.
Corrosion and thermal cycling drive metal expansion that freezes the pin in place.
Your line is down, the pin won’t move, and every lost minute costs production.
Why This Failure Happens
WH132, WDH159, and ER864 chains pack with fines that migrate into the bushing and gall the pin. Corrosion and thermal cycling expand the joint until the pin seizes tight. Load shocks then deform the link shoulders, locking the jammed pin and stopping the system.
Why Operators Choose Kingpin Breaker
Faster hydraulic force blasts out jammed pins
Zero-torch removal protects underground crews
Precision alignment prevents link distortion
Portable unit works anywhere in the mine
Handles WH132, WDH159, ER864 chains easily
Built to Perform.
PIN LENGTH RANGE
2.25" – 7.8"
INCLUDES MULTI-CHAIN KIT
(2) Pin Cavities, (4) Pushpins, (5) Spacers
DIMENSIONS (Tool Body)
16.5" × 2.5" × 16"
PIN DIAMETER
1.125" and below
HYDRAULIC CYLINDER
15-ton Hand Pump (foot pedal available)
WEIGHT
28 lbs.
Why Maintenance Teams Trust Kingpin Breaker
Fast. Safe. Simple. Versatile.
Fast
Break even the most
stubborn chains in about
two minutes.
Safe
Reduce hand and back injuries — no hammers, torches, or channel locks.
Simple
Lightweight, intuitive design. Set up and service chains immediately.
Versatile
One tool for almost all chain sizes — fits in tight spaces with ease.
How it Works
From Setup to Break in Minutes.
Real Breakdown Scenarios We Fix
WH132 chain pin jammed after thermal cycling in a main haul feeder
WDH159 pin frozen from corrosion inside an underground crusher conveyor
ER864 drag chain locked solid after fines packed the bushing tight
Jammed chain pin blocking flight replacement on a longwall discharge conveyor
Stuck pin preventing tension reset on an underground ore transfer drag system
Request a Quote
Seized pin? Not for long.
Kingpin Breaker
Make stubborn pins tap out.
Contact
Email: cooper@kingpinbreaker.com
Phone: (262) 781-3870
Location
Wisconsin, USA