Leveling & Anchoring
Leveling Procedure
Proper leveling ensures even load distribution on tie bars, smooth platen movement, and accurate mold alignment.
Tools Required
- Precision machinist’s level (0.02 mm/m sensitivity)
- Feeler gauges
- Shims (various thicknesses, stainless steel)
- Torque wrench (calibrated)
Procedure
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Position the machine: Place the machine at the final installation location on the prepared floor.
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Rough leveling:
- Place the precision level on the moving platen surface (clean surface first).
- Level in both longitudinal (clamp direction) and transverse directions.
- Adjust leveling feet or shims as needed.
- Target: ≤ 0.10 mm/m in both directions.
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Fine leveling:
- Move the level to the fixed platen surface.
- Adjust until both platens are within 0.05 mm/m.
- Check level on the injection unit base plate.
- Target: entire machine within 0.10 mm/m.
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Check under load:
- Apply 50% of rated clamp force.
- Re-check platen level.
- Adjust if necessary.
- Release clamp force and re-check.
Temperature changes can affect leveling. Perform final leveling when the machine and floor are at normal operating temperature (run the machine for 2 hours, then re-check). Do not level a cold machine.
Anchoring
When to Anchor
| Machine Size | Anchoring Required |
|---|---|
| ≤ 1000 kN | Not required (leveling feet only, with lock nuts) |
| 1000–3000 kN | Recommended (anchor bolts + leveling pads) |
| > 3000 kN | Required (anchor bolts + epoxy grout) |
Anchor Bolt Installation
- Mark bolt positions on the floor using the machine base plate drilling template.
- Drill holes to the specified depth (typically 150–300 mm).
- Clean holes thoroughly (vacuum + brush).
- Inject chemical anchor epoxy.
- Insert anchor bolts before epoxy sets.
- Remove the machine, allow epoxy to cure (per manufacturer instructions).
- Reposition the machine and tighten nuts to specified torque.
Grouting (For Large Machines)
- Build a form around the machine base plate.
- Mix non-shrink epoxy grout according to manufacturer specifications.
- Pour grout through pour holes to completely fill under the base plate.
- Allow to cure for minimum 24 hours before applying load.
- After curing, tighten anchor bolts to final torque.
Tightening Torque
| Bolt Size | Torque (Steel grade 8.8) |
|---|---|
| M16 | 180–200 N·m |
| M20 | 350–400 N·m |
| M24 | 600–700 N·m |
| M30 | 1200–1400 N·m |
Final Check
After leveling and anchoring:
- Re-check platen level — it should be within 0.10 mm/m.
- Check all leveling foot lock nuts are tightened.
- Verify machine frame is not twisted (check diagonal measurements).
- Record final level measurements in the installation log.