Product Overview
Engineered for industrial-grade applications requiring high strength, speed, and vibration resistance, our Heavy-Duty Alloy Steel Ratchet F Clamp delivers a continuous clamping force of up to ≥370kg≥370kg (3.7 kN) across all size options. Built with a full heat-treated alloy steel construction and a chrome-plated rail (25×12mm25×12mm / 22×12mm22×12mm), this clamp offers outstanding rigidity, smooth adjustment, and long-lasting rust protection. The ergonomic ratchet lever mechanism allows rapid, high-torque clamping with an instant trigger release, preventing tool loosening under heavy power tool vibrations or hammering. Featuring a generous 120mm throat depth (H), it is the ultimate quick-clamping solution for heavy woodworking, metal fabrication, welding, and machinery assembly.
Key Features
- ≥370kg≥370kg Heavy-Duty Clamping Pressure:Delivers consistent high-torque clamping force (≥370kg≥370kg) across all size options (300mm to 800mm) for demanding professional tasks.
- Full Heat-Treated Alloy Steel:The forged body and ratchet mechanism undergo full heat treatment, providing exceptional tensile strength, wear resistance, and tooth durability.
- Chrome-Plated Fast Adjusting Rail:Smooth chrome plating protects the steel rail from rust and welding spatter while allowing the sliding arm to glide effortlessly into position.
- Vibration-Proof Ratchet Mechanism:Ratchet gear locking system absorbs shock and vibration from cutting, routing, or hammering without slippage or backing off.
- 120mm Deep Throat Capacity:Extended 120mm120mm throat depth provides deeper reach into workpieces compared to standard quick clamps.
Applications
- Heavy Metal Fabrication & Welding: Secure metal plates, angle iron, and tubes during welding and machining.
- Industrial Woodworking & Joinery: High-speed clamping for large wood panels, frames, and furniture assembly.
- Machinery & Equipment Assembly: Temporary holding and positioning of heavy parts on assembly lines.
- Guide Rail & Workbench Setup: Fast, vibration-resistant clamping on MFT workstations and heavy jigs.
Specifications
| Item No. | Part No. | Clamping Capacity LxH | Rail Size | Inner/Carton Qty | Net Wt. | Gross Wt. | Max Force |
|---|---|---|---|---|---|---|---|
| W30454 | F-300 | 300×120 mm300×120 mm | 25×12 mm25×12 mm | 2 pcs / 10 pcs | 2.20 kg | 23.00 kg | ≥370 kg≥370 kg |
| W30455 | F-400 | 400×120 mm400×120 mm | 25×12 mm25×12 mm | 2 pcs / 8 pcs | 2.42 kg | 20.50 kg | ≥370 kg≥370 kg |
| W30456 | F-500 | 500×120 mm500×120 mm | 25×12 mm25×12 mm | 2 pcs / 8 pcs | 2.64 kg | 22.50 kg | ≥370 kg≥370 kg |
| W30457 | F-600 | 600×120 mm600×120 mm | 25×12 mm25×12 mm | 2 pcs / 8 pcs | 2.86 kg | 24.00 kg | ≥370 kg≥370 kg |
| W30458 | F-800 | 800×120 mm800×120 mm | 22×12 mm22×12 mm | 2 pcs / 4 pcs | 3.29 kg | 14.50 kg | ≥370 kg≥370 kg |
Why Choose Us
- Heavy-Duty Structural Superiority: Unlike lightweight plastic quick-clamps, our forged alloy steel construction handles true industrial loads up to 370kg.
- Overall Heat-Treatment Craftsmanship: Maximizes strength and fatigue resistance across the entire body, preventing rail flex and ratchet wear.
- Rigorous Quality Control: Every production run undergoes load testing to guarantee 370kg force compliance and 100% gear locking reliability.
- Direct Manufacturer Source: Competitive direct wholesale pricing, stable mass-production lead times, and reliable international packaging.
Customization Services
We partner with international hardware brands, tool importers, and industrial suppliers for custom solutions:
- Custom Handle Grips: Custom color-molded ergonomic grips (TPR/PVC soft coating) matching your company’s brand aesthetic.
- Laser Logo Branding: Precise laser etching of logos, trademarks, and model codes on the chrome steel rail or ratchet body.
- Surface Coating Options: Chrome plating, black phosphate/oxide finish, or custom anti-rust treatments.
- Retail & Export Packaging: Customized hanging display cards, inner color boxes, barcodes, and reinforced palletized shipping master cartons.
FAQ
Q1: What is the main difference between this heavy-duty ratchet F clamp and standard quick bar clamps?
A: Standard plastic quick clamps usually provide 50–150kg of force and can flex under load. Our heavy-duty ratchet clamp is made of full heat-treated alloy steel with a 25×12mm25×12mm rail, delivering a guaranteed ≥370kg≥370kg clamping force without bending.
Q2: Does the heat-treated chrome plating resist welding spatter?
A: Yes! The chrome-plated alloy steel surface resists corrosion and makes it much easier to wipe off light welding spatter compared to plain or painted steel clamps.
Q3: Is the 370kg clamping pressure guaranteed on larger sizes like the F-800 (800mm)?
A: Absolutely. Thanks to the high-strength alloy steel profile and heat treatment, even the 800mm800mm version maintains a continuous clamping force of ≥370kg≥370kg.
Q4: How does the quick trigger release operate under maximum clamping pressure?
A: The spring-loaded trigger instantly disengages the ratchet pawl smoothly with a single touch, allowing the clamp to release even under peak load without jamming.
Q5: What is the Minimum Order Quantity (MOQ) for custom logo branding and OEM packaging?
A: Standard OEM branding and custom packaging MOQ is typically 300 to 500 pcs per size. Contact our team for customized quotes based on total order quantities.
