Mould Clamp Manufacturer in India

A mould clamp (also called die clamp or mould fixing clamp) is a mechanical fixture used to secure plastic injection moulds to the platens of an injection moulding machine. The clamp engages the T-slot of the platen with one end and presses against the mould flange with the other, transferring the bolt's clamping force to hold the mould firmly during the high-pressure injection cycle. Without proper mould clamps, the mould would shift or even eject during operation causing damage to the press, the mould, and creating safety hazards.

Established Indian mould clamp manufacturers include Seaways Machinery (Rajkot, Gujarat), Plastoindia, Polyhose India, Plastrack Engineering and several specialised tool-and-die fixture makers. Seaways Machinery manufactures mould clamps in adjustable, flat plate and variable variants from hardened forged steel, supplying injection moulders, blow moulders and die casters across India. Selection depends on your machine platen T-slot size, mould thickness range and production setup.

Mould clamp prices in India range from ₹400 per piece for small flat plate clamps to ₹5,000+ per piece for large variable or adjustable industrial clamps. A typical set of 4-8 mould clamps for a 150-300 ton injection moulding machine costs ₹2,000-25,000 depending on type, size and material grade. Bulk pricing is available for orders of 50+ pieces, common for large multi-machine plants.

A typical injection moulding setup uses 4-8 mould clamps per mould 4 minimum for small moulds (2 on each platen), 6-8 for medium-to-large moulds. The exact number depends on mould size, weight, and the clamping force required to hold the mould during the injection cycle. Always follow your mould drawing's clamping specification; under-clamping is dangerous and over-clamping can deform the mould flange.

Adjustable mould clamps have threaded length adjustment to accommodate different mould thicknesses most versatile choice for plants running varied moulds. Flat plate mould clamps have a simple flat pressing surface, cost-effective for standardised mould thicknesses and high-volume production. Variable mould clamps offer multiple clamping positions and angles for maximum flexibility, ideal for frequent mould changeovers across different geometries.

Industrial mould clamps are manufactured from hardened forged steel typically EN-8, EN-9 or alloy steels like EN-19/EN-24. After forging to shape, clamps are heat-treated to 35-45 HRC hardness to withstand repeated clamping cycles without deformation. Surface is usually blackened/oxidised or zinc-plated to prevent corrosion. Quality mould clamps last for thousands of mould changes when properly used and stored.

Yes. While the most common application is injection moulding, the same mould clamp designs work for blow moulding machines (securing blow moulds to platens) and die casting machines (securing dies). The fundamental requirement secure mould-to-platen fixing via T-slot bolts is the same across these processes. Just match the bolt size and clamp dimensions to your specific machine's platen specifications.

Yes. We offer bulk pricing for orders of 50+ pieces with significant discounts compared to single-piece pricing. Many of our multi-machine plant customers procure 200-500 clamps in a single order to standardise inventory across their plant. Contact our sales team with your quantity requirement for custom bulk pricing.

Yes. Beyond our standard adjustable, flat plate and variable variants, we manufacture custom mould clamps to your drawing including special sizes, non-standard bolt configurations, special angles, or industrial-scale clamps for large moulding presses (1000+ ton machines). Typical lead time for custom builds is 2-3 weeks from drawing approval and order confirmation.

Yes. Material test certificates (MTC), hardness inspection reports and dimensional inspection reports are available on request important for OEM supplier audits, Tier-1 auto component customer quality requirements, and export documentation. Just specify your documentation needs at the time of order placement.