Mold Side Locks
Product Introduction: High-Quality Mold Side Locks (Alignment Locks / Parting Line Locks)
In injection molds and die-casting molds, Side Locks are precision positioning components installed at the four corners of the mold parting surface, ensuring accurate alignment between the moving and fixed mold halves during clamping, preventing core shift caused by guide component wear or excessive clearance. As a mold manufacturer that produces for our own use, we maintain extremely stringent standards for concentricity, wear resistance, and locking force of side locks. Every set undergoes precision machining and rigorous inspection to ensure precise positioning, no loosening, and no galling during long-term high-frequency clamping cycles.
Self-Produced and Self-Used, Rigorously Selected
We are not only a supplier of mold components but also a mold producer ourselves. Through extensive practical experience in our own molds, we have repeatedly validated the steel selection, heat treatment process, taper fit precision, and wear resistance of side locks. Only those with precise positioning, excellent wear resistance, and exceptional durability are approved for our supply system.
Premium Materials, Wear and Pressure Resistant
Our side locks are manufactured from high-strength alloy steels such as SKD11, Cr12MoV, or SUJ2, undergoing quenching and tempering treatment to achieve a working surface hardness of HRC58-62. Excellent wear resistance and compressive strength ensure dimensional stability during repeated clamping cycles, effectively compensating for clearance caused by guide pin and bush wear, protecting cores and cavities.
Precision Machining, Taper Fit
The male and female components of side locks are precision ground, with taper mating angles typically ranging from 5° to 10°, ensuring automatic centering and progressive locking during clamping. Mating surface flatness is controlled within 0.005mm, with surface roughness below Ra0.4μm, ensuring precise repositioning for every clamping cycle and eliminating product flash.
Working Principle, Eliminating Misalignment
Side locks generate lateral locking force in the final stage of clamping through the interlocking of tapered male and female surfaces, forcing the moving and fixed mold halves to return to their designed positions, eliminating minor misalignment caused by guide wear, thermal expansion, or lateral forces. Particularly suitable for:
Large molds (preventing sagging misalignment due to plate self-weight)
Precision multi-cavity molds (ensuring consistent cavity position accuracy)
Molds with high lateral forces (such as applications with strong slider core-pulling forces)
High-speed injection molds (reducing positioning errors caused by impact)
Easy Installation, Simple Maintenance
Side locks feature standardized mounting dimensions, with male and female components installed at corresponding positions on the moving and fixed mold halves. Mounting surfaces are precision ground to ensure tight fit with mold plates. The modular design facilitates easy disassembly and maintenance. In case of wear, individual male or female components can be replaced separately without replacing the entire set.
Complete Specifications, Customized Solutions
For standard specifications, we maintain regular inventory of common sizes (from 50×50mm to 200×200mm) and taper angles for quick dispatch. For non-standard customization, based on your mold structure and accuracy requirements, we offer custom side locks with special sizes, special tapers, special materials, and wear-resistant coatings or graphite inlays.
We Can Also Source for You
If you have requirements for side locks or other mold components, whether standard or non-standard, we can leverage our production experience and supply chain resources to select and procure the most suitable parts for you. We know molds, and we know components.
Contact us today for samples and a quotation.
