Why the mold base matters
The mold base is the frame that holds every other component — the plates, the cavity and core, the ejector system, and the alignment hardware. It sets the overall size of the tool, the plate stack, and how the mold mounts to the press. Getting the base right from the start saves hours of rework and keeps the whole tool square and repeatable.
What a mold base includes
- Plates: The top, cavity, core, and ejector plates that make up the stack.
- Alignment: Leader pins and bushings that keep the halves aligned.
- Ejector system: The ejector plate, pins, and return hardware that push the part out.
- Locating: The locating ring and sprue bushing that seat the mold to the machine.
PCS mold bases and F.I.T.S. frames
PCS Company offers mold bases and F.I.T.S. frames for injection molds. F.I.T.S. (Fast Insert Tooling System) frames use insert assemblies that let you change cavity and core inserts quickly, cutting tool changeover time. PCS frames are built with case-hardened leader pins and matching shoulder bushings for reliable alignment, and are available in standard sizes with custom options.
Standard vs. custom
- Standard bases: Off-the-shelf sizes and plate stacks for common press and part sizes — the fastest, most economical option.
- Custom frames: Modified plate sizes, extra plates, or special features for tools that do not fit a standard base.
What to specify
- Overall base size and plate thickness.
- Number of plates in the stack.
- Leader pin diameter and location.
- Ejector system layout and stroke.
- Locating ring and sprue bushing size.
Catalog item plug: Tooling Components sells PCS mold bases and F.I.T.S. frames for injection molds — standard and custom frame options sized to your press and part. Call (814) 438-7657 or email sales@toolingcomponent.com for same-day pricing.