APPLICATIONS · CRANE & HOIST
Cranes and hoists drive every motion into a mechanical stop. The switches at boom, trolley, and hoist positions are the last stop before the structure, and they work outdoors in wind, dust, and temperature swings.
THE DEMANDS
Most crane retrofit projects need direct dimensional replacements for legacy installations. Our housings match standard industrial mounting pitches and actuator heights, allowing direct changeouts without re-drilling structural brackets.
Outdoor gantries and electric hoists use varying conduit standards. We provide conduit threading options (M20×1.5, G1/2, Pg13.5) and adjustable lever arms up to custom lengths, matching your existing festoon cabling and strike dogs.
For cranes serving export markets, switches comply with CE, CCC, and TÃœV standards with documented electrical ratings. Each production batch undergoes dielectric and contact resistance testing before dispatch.
SWITCH POSITIONS
Hoist and trolley motions end at stops on the track and the drum. Adjustable arms set the switching point to the travel of each motion.
WL Series
TSA Series
Boom luffing and slewing end at mechanical stops on the structure. Metal-housed switches take the contact at these points.
WL Series
TSA Series
Structure positions meet rain, dust, and temperature swings through the year. Sealed metal housings cover the exposed corners of the crane.
TZ-3 Series
WL Series (Metal)
RECOMMENDED PRODUCTS
These are general suggestions based on technical specifications. Contact our engineering team for a recommendation specific to your crane.
BOOM, TROLLEY, AND HOIST STOPS
Robust die-cast aluminum body with IP66 oil and weather resistance. Double-circuit contact block with a dual-spring mechanism, designed for outdoor girder travel and winch drum limits.
HIGH-IMPACT MECHANICAL STOPS
Safety-rated limit switch with positive-break mechanism. TUV and CE certified. Manual reset variant (T4NR) available for lift door applications.
EMERGENCY OVERTRAVEL & SAFETY CUTOFF
Certified forced disconnect NC contacts (EN 60947-5-1) ensure positive circuit breaking even if contacts weld under surge. Optional manual reset (T4N-R) locks out the hoist until inspected.
COMPACT AXIS & HOIST LIMITS
Ultra-compact vertical profile (approx. 1/3 the volume of standard limit switches) with an IP65 zinc-alloy base and fully openable terminal chamber for fast wiring in restricted compartments.
SELECTION PROCESS
We calculate the impact force based on your trolley or boom travel speed and dog geometry, ensuring the actuator arm and roller material (stainless steel or rubber) withstand repeated mechanical shock.
We specify the housing build—from IP65 zinc-alloy to IP66 die-cast aluminum or IP67 multi-sealed units—based on whether the position is sheltered in a machinery cab or exposed to outdoor rain, ice, and salt spray.
We match the internal contact blocks: choosing double-break snap-action contacts for standard travel indication, or certified forced-disconnect NC contacts with manual reset for emergency overtravel protection.
Provide travel speeds, mechanical strike angles, conduit requirements, and ambient exposure. Our technical team matches the exact part number and arm profile within 24 hours.
MAINTENANCE
Cranes are inspected on a statutory schedule. The switch checks below fit into the same visit.
Â
NEXT STEP
Tell us about the crane: motion types, travel, ambient conditions, and the control voltage. Our engineering team will match the switch to each stop.
Download catalogues with ratings and drawings, and request 3D files for the crane design.
