Heavy-Duty Mechanical Stabiliser Legs (Corner Steadies / Support Props)

Engineered for precision leveling, positive chassis support, and positive anti-tip stabilization, these Heavy-Duty Mechanical Stabiliser Legs provide a rock-solid foundation for commercial trailers, mobile service units, campers, and utility equipment. Designed to prevent chassis bounce, body roll, and dangerous tilting during stationary loading, unloading, or campsite setup, these prop legs deliver rigid stability across diverse terrain.

Each leg is built around a heavy-duty structural steel body housing a precision internal mechanical drive screw that enables smooth, controlled height adjustments under load. With a standardized 500 kg linear load capacity across the range, these stabilizer legs are offered in Small, Medium, and Large sizes to accommodate everything from low-profile road chassis to lifted 4x4 overland rigs and high-deck commercial platforms.

Key Features & Benefits:

• Consistent 500 kg Linear Load Rating: Every size variant safely supports up to 500 kg of static linear/downward force, ensuring reliable, unyielding support under heavy cargo, vehicle traffic, or living quarter movements.

• Precision Internal Lead Screw: Smooth, continuous mechanical screw drive allows effortless fine-tuning and micro-leveling on uneven ground without slipping, hydraulic drop, or binding.

• Wide Stroke & Height Options: Three calibrated lengths (180 mm, 290 mm, and 430 mm stroke) provide tailored ground reach for compact utility trailers through to extra-high commercial decks.

• Robust Structural Steel Construction: Heavy-gauge carbon steel body resists torsional twist, lateral deflection, and bending forces caused by shifting onboard weight.

• Universal Winding Engagement: Features a standard drive engagement head compatible with standard caravan/trailer corner steady crank handles and socket adaptors for rapid deployment and retrieval.

• Corrosion-Resistant Protective Finish: Fully treated with a durable zinc-plated or protective coating to safeguard internal threads and external surfaces against road spray, mud, moisture, and harsh weather.

Size & Stroke Options:

1. Small Size (180 mm Stroke)

• Stroke Length: 180 mm

• Retracted Length: 380 mm

• Extended Length: 560 mm

• Linear Load Capacity: 500 kg

• Best Suited For: Low-profile road trailers, compact luggage trailers, teardrop campers, and standard-height box trailers where clearance is limited and a low travel profile is essential.

2. Medium Size (290 mm Stroke)

• Stroke Length: 290 mm

• Retracted Length: 520 mm

• Extended Length: 810 mm

• Linear Load Capacity: 500 kg

• Best Suited For: Standard-to-high clearance caravans, horseboxes, tandem-axle utility trailers, and standard trade bodies requiring a versatile balance of compact storage and extended reach.

3. Large Size (430 mm Stroke)

• Stroke Length: 430 mm

• Retracted Length: 690 mm

• Extended Length: 1,120 mm

• Linear Load Capacity: 500 kg

• Best Suited For: Lifted off-road 4x4 camper trailers, high-deck commercial flatbeds, agricultural plant equipment, and heavy machinery platforms operating on rutted, sloping, or uneven wilderness terrain.

Comparison & Selection Guide:

Ideal Applications:

• Trailer Rear Anti-Tip Stabilization: Fitted to the rear frame corners of utility, equipment, or car-trailer decks to prevent rear tipping when loading heavy machinery, ATVs, or cargo without being hitched to a vehicle.

• Caravans & Camper Trailers: Steadying living platforms, eliminating sway, and leveling chassis on uneven campsite pitches or soft ground.

• Mobile Workstations & Catering Trailers: Keeping food trucks, generator skids, and mobile workshop bodies firmly planted during daily operation.

• Agricultural & Industrial Platforms: Stabilizing field bowsers, compressor units, and stationary implements.

Product Specifications:

• Product Type: Mechanical Stabiliser Leg / Support Prop / Corner Steady

• Drive Mechanism: Manual Internal Lead Screw

• Linear Load Capacity: 500 kg (per leg)

• Material: Heavy-Gauge High-Tensile Structural Carbon Steel

• Finish / Surface Treatment: Protective Bright Zinc-Plated / Industrial Corrosion-Resistant Coating

• Mounting Style: Chassis Bracket Weld-On / Bolt-On Compatible

• Operation: Manual Crank Handle / Hex Socket Winding

• Condition: Brand New Industrial Trailer & Body Hardware