LD-251 Cast Iron C-Clamp G-Clamp Heavy Duty | Wholesale Supplier

LD-251 Cast Iron C-Clamp G-Clamp Heavy Duty | Wholesale Supplier

SKU: LD-251

LD-251 Cast Iron C-Clamp G-Clamp for woodworking, metalworking, and welding clamping. Available in 2-8 inch sizes with threaded screw and swivel pad.

MOQ:200
Price Range:$1.00 - $8.00 / pc
Material:Malleable Cast Iron Body / Forged Steel Screw / Swivel Pad with Copper or Rubber Tip / Powder Coated Finish
Certifications:CE / ISO 9001 / DIN 5261
Size Range:2 inch (50mm) / 3 inch (75mm) / 4 inch (100mm) / 5 inch (125mm) / 6 inch (150mm) / 8 inch (200mm); Throat depth 25-80mm; Clamping force 200-1000kg
Color Options:Green / Black / Blue / Red / Orange Powder Coat
Weight:300
Packing:Individual polybag, 1 pc per pack, 12-24 pcs per carton
Lead Time:15-25 days
Sample:Available
Customization:OEM size, custom color, private label branding, logo casting, swivel pad material specification
Mixed Order:true

Product Details

LD-251 Cast Iron C-Clamp G-Clamp Heavy Duty

LD-251 Cast Iron C-Clamp G-Clamp for woodworking, metalworking, and welding clamping. Available in 2-8 inch sizes with threaded screw and swivel pad.

The LD-251 Cast Iron C-Clamp G-Clamp is a heavy-duty clamping tool designed for holding workpieces securely during woodworking, metalworking, welding, automotive panel repair, glue-up assembly, and general fabrication tasks. The classic G-shaped frame design provides exceptional clamping strength and rigidity, with the curved frame distributing clamping force evenly across the workpiece while resisting deflection under high loads. The clamp body is manufactured from malleable cast iron, which offers superior strength and shock resistance compared to gray cast iron, preventing cracking and breakage under heavy clamping loads. The powder-coated finish provides excellent corrosion resistance and a professional appearance, available in green, black, blue, red, and orange for color-coded workshop organization. The main screw is forged from high-strength steel with a coarse ACME thread that provides rapid adjustment and high clamping force with minimal effort. The T-handle design allows comfortable hand tightening, while the tommy bar design allows maximum torque for heavy-duty clamping. The swivel pad at the end of the screw is designed to pivot and conform to angled or irregular workpiece surfaces, ensuring even pressure distribution and preventing workpiece damage. The swivel pad is available with a copper tip for welding applications (prevents spark damage and spatter adherence), a rubber tip for delicate surfaces, or a plain steel tip for general-purpose use. The clamp is available in sizes from 2 inch (50mm) for light-duty craft and model work to 8 inch (200mm) for heavy-duty industrial clamping. The throat depth ranges from 25mm for small clamps to 80mm for large clamps, determining how far the clamp can reach from the edge of the workpiece. The clamping force ranges from 200kg for 2-inch clamps to 1000kg for 8-inch clamps, providing sufficient holding power for even the most demanding applications. Whether clamping wood for glue-up assembly, holding metal for welding, fixing automotive body panels for repair, securing workpieces for machining, or holding materials for general fabrication, the LD-251 C-clamp provides reliable and powerful clamping.

Core Features

  • Malleable cast iron body for strength and shock resistance
  • Forged steel screw with coarse ACME thread
  • Swivel pad conforms to angled workpiece surfaces
  • Copper, rubber, or steel swivel pad options
  • Powder-coated finish in multiple colors
  • Available in 2-8 inch sizes with 200-1000kg clamping force

Application Scenarios

  • Woodworking glue-up and assembly clamping
  • Metalworking and welding workpiece fixturing
  • Automotive body panel repair and holding
  • DIY craft, model making, and hobby work
  • Temporary workpiece holding for machining
  • General fabrication and assembly clamping

FAQ

What size C-clamp do I need for my project?

For general woodworking, 4-inch clamps handle most tasks. For welding, use 4-6 inch clamps for typical work. For automotive work, 3-4 inch clamps are suitable for panel holding. The clamp size should match the workpiece thickness plus the throat depth needed to reach the clamping point. Always use the smallest clamp that provides adequate reach and force.

What is the difference between copper and rubber swivel pads?

Copper pads are used for welding to prevent spatter from sticking to the pad and to protect the workpiece from spark damage. Rubber pads are used for delicate surfaces like finished wood or painted metal to prevent marring. Plain steel pads are for general-purpose use on rugged materials where surface marking is not a concern.

Can C-clamps be used for overhead lifting?

No, C-clamps are designed for clamping and holding workpieces, not for lifting. Never use a C-clamp to suspend or lift loads overhead. Use certified lifting clamps or hoists rated for lifting applications. C-clamp failure under load can result in serious injury.

How do I maintain my C-clamps?

Clean the screw thread regularly and apply light machine oil to prevent rust and ensure smooth operation. Inspect the clamp body for cracks before each use, especially if the clamp has been dropped. Store in a dry environment. Replace clamps with cracked bodies or bent screws immediately, as they may fail under load.