HySecurity MX4311, Timing Belt Shroud, SlideSmart HD
The HySecurity MX4311 timing belt shroud is a protective cover used around the timing belt area on SlideSmart HD operators. In a slide gate operator, the belt and pulley area should remain guarded to help protect moving components and reduce exposure to debris or accidental contact. A missing or broken shroud can leave the drive area more vulnerable to dirt, belt damage, or unsafe access during operation. This replacement shroud is listed in HySecurity SlideSmart HD parts references for HD15F, HD25, and HD30 models. It should not be confused with the timing belt itself, the gearbox pulley, motor pulley, idler assembly, or chain/sprocket components.
What This Part Does
Protective timing belt safety shroud for select HySecurity SlideSmart HD operators.
Compatible With
Compatibility is based on currently available HySecurity and distributor part references. Always verify the exact operator model, serial range, configuration, and parts diagram before ordering.
- HySecurity SlideSmart HD15F models where MX4311 is listed
- HySecurity SlideSmart HD25 models where MX4311 is listed
- HySecurity SlideSmart HD30 models where MX4311 is listed
- SlideSmart HD chassis/mechanical service where the timing belt safety shroud is missing or damaged
- Not a replacement for MX002106 drive belt, MX002076 gearbox pulley, MX001403 motor pulley, or MX4280 idler assembly
Features and Specifications
| Manufacturer | HySecurity / Nice HySecurity |
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| Product Type | Timing belt safety shroud |
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| Part Number | MX4311 |
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| Application | SlideSmart HD timing belt cover / guard area |
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| Compatible Operator Type | Slide gate operator |
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| Common Operator Families | SlideSmart HD15F, HD25, HD30 where shown in parts diagram |
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| Included Components | Shroud only unless otherwise stated |
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| Notes | Do not operate equipment with missing or damaged guards |
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Also Known As / Related Part Numbers
- MX4311
- HYS-MX4311
- Nice HySecurity MX4311
- HySecurity Timing Belt Shroud, SlideSmart HD
- HySecurity Timing Belt Safety Shroud MX4311
Technician Note
This is an OEM-style HySecurity replacement part. Similar-looking HySecurity parts may differ by operator family, generation, voltage, harness length, handedness, or mechanical position. Use the original part number and the operator parts diagram as the final fitment check.
Before Ordering Checklist
- Confirm the HySecurity model and operator family.
- Match the full part number, including any suffix.
- Compare the original part location, connector, hardware, and mounting style.
- Check surrounding parts for wear or damage before replacing only one component.
- For hydraulic, high-load mechanical, or electrical repairs, use a qualified gate technician.
Professional Advisory
Gate and barrier equipment can move with significant force and may contain stored mechanical energy, hydraulic pressure, or live electrical circuits. Do not bypass safety devices, guards, sensors, or interlocks. If the system has uncontrolled movement, missing guards, damaged wiring, hydraulic leakage, or uncertain compatibility, stop operation and have the equipment inspected by a qualified technician.
Product Questions and Answers
What does the MX4311 timing belt shroud cover?
It covers the timing belt area on compatible SlideSmart HD operators to help guard the moving belt and related drive components.
Which SlideSmart HD models is MX4311 associated with?
HySecurity SlideSmart HD parts references list MX4311 across HD15F, HD25, and HD30 model references where the parts diagram calls for it.
Is MX4311 the timing belt?
No. MX4311 is the protective shroud only. The timing belt, pulleys, idlers, and gearbox parts are separate items.
Should the operator be used with a missing shroud?
No. Missing or damaged guards should be corrected before operation to reduce exposure to moving components.
Can this shroud be used on SlideSmart CNX?
Do not assume that. This item is written for SlideSmart HD and should be matched to the exact operator parts diagram.
