Side Mounting Parting Lock Sets
External cam/slide parting locks that mount on the mold exterior for accessible sequence control. Available in light, medium, and heavy load configurations with an optional compact 46mm variant for tight spaces.
Products (3 Series)
Parting Lock Sets — Light, Medium or Heavy Load
PLL / PLM / PLS | Standard Size
Parting Lock Sets — Mold Opening/Closing Control
PLOC Type | Bidirectional Control
Parting Lock Sets — Compact, 46 mm Wide
46mm Body | Small Mold Compatible
Load Capacity Selection Guide
Choose the right load capacity based on your mold tonnage and application:
| Criteria | Light Load (PLL) | Medium Load (PLM) | Heavy Load (PLS) | Compact (46mm) |
|---|---|---|---|---|
| Mold Tonnage | ≤200 tons | 200–500 tons | 500+ tons | ≤200 tons |
| Lock Body Width | 80 mm | 100 mm | 120 mm | 46 mm |
| Locking Force | Standard | 1.5× Standard | 2.5× Standard | 0.8× Standard |
| Bidirectional Control | ✗ | ✗ | ✗ | ✗ |
| Best For | Small-medium molds, general use | Medium molds, moderate loads | Large molds, heavy plates | Tight spaces, small molds |
Selection tip: For molds requiring both opening and closing control, use the PLOC bidirectional variant regardless of tonnage. See our How to Select Light, Medium, or Heavy Load Parting Lock Sets for Side Mounting.
Side Mount vs PL Face Mount — Are You in the Right Place?
✅ Choose side mounting when:
- You need external access for adjustment during production
- Mold interior space is occupied by cooling channels or slides
- You need to control both opening and closing direction (PLOC)
- Quick maintenance without mold removal is important
🔄 Consider PL face mounting instead:
- Resin Sleeve Parting Locks — lower cost, internal mounting, proven technology
- Roller Lock Sets — when positioning accuracy ±0.02 mm is critical
Application Scenarios
Quick-Change Mold Production
Production environments with frequent mold changes where maintenance must be performed without removing the mold from the press.
Why it fits: Side-mount locks are fully accessible from the exterior, allowing adjustment and part replacement in minutes without press downtime.
Bidirectional Sequence Control
Complex molds where plate movement must be controlled in both opening AND closing directions to prevent premature engagement or collision.
Why it fits: The PLOC bidirectional variant is the only parting lock that actively controls both directions, preventing sequence errors in both phases of the cycle.
Frequently Asked Questions
How do I select the right load capacity for side mounting parting locks?+
What is the advantage of side mounting over PL face mounting?+
Can side mounting parting lock sets control both mold opening and closing?+
What is the minimum mold width required for the compact 46mm parting lock?+
Engineering Resources
How to Select Light, Medium, or Heavy Load Parting Lock Sets for Side Mounting
Load capacity selection criteria and installation guidelines for side-mount parting locks.
When to Choose Side-Mount Parting Locks Over PL Face-Mount Designs
Decision framework comparing side-mount vs internal parting lock configurations.
Need a Custom Quote?
Specify load capacity (light/medium/heavy), mounting width, and whether bidirectional control is needed. Volume pricing available for multi-mold orders.