HySecurity MX3701-02, Gearbox, with oil, Wedge, Right Handing
The HySecurity MX3701-02 is a right-hand gearbox with oil for select HySecurity / Nice HySecurity WedgeSmart DC operator applications. HySecurity parts documentation lists MX3701-02 as Gearbox, with Oil, Wedge, Right Handing for WedgeSmart DC right-hand models.
This gearbox should be selected by part number, operator handing, and the current HySecurity parts diagram. It is not interchangeable with the left-hand gearbox unless the operator configuration and HySecurity documentation confirm the correct part. The related left-hand gearbox is MX3701-01.
What This Gearbox Does
The gearbox is part of the WedgeSmart DC drive system. It helps transfer motor-driven motion through the wedge drive assembly so the wedge plate can raise and lower under controlled operation.
A worn or damaged gearbox may cause noise, binding, uneven movement, drive hesitation, oil leakage, excessive play, poor torque transfer, or failure of the wedge to move correctly. Gearbox symptoms can also be caused by chain problems, target sensor issues, spring tube binding, shear bolt damage, strap problems, rod end wear, or a wedge panel that is not moving freely.
Compatible With
This gearbox may be used with the following applications where the current HySecurity parts diagram confirms MX3701-02:
- Select HySecurity WedgeSmart DC right-hand operator applications
- WedgeSmart DC repairs where the existing gearbox is marked, listed, or cross-referenced as MX3701-02
- Applications requiring the right-hand wedge gearbox with oil
- WedgeSmart DC drive system repairs where the chain, spring tube, target sensor, strap, rod end, and related drive hardware match the original right-hand configuration
- Service work where the current HySecurity parts documentation lists MX3701-02 as the correct right-hand gearbox
Important: Do not assume MX3701-02 fits every WedgeSmart DC operator. Handing must be verified. HySecurity documentation lists MX3701-02 for right-hand models and MX3701-01 for left-hand models.
Similar Parts That Are Not Interchangeable
WedgeSmart DC drive parts can be easy to confuse. The right-hand gearbox, left-hand gearbox, chain, target sensor, spring tube assembly, strap, rod end, and shear bolt assembly are different parts and are not automatically interchangeable.
| Part Number | Common Description | Interchangeability Note |
| MX3701-02 | Gearbox with oil, wedge, right handing | Correct where the WedgeSmart DC parts diagram lists the right-hand gearbox |
| MX3701-01 | Gearbox with oil, wedge, left handing | Left-hand version; not interchangeable with MX3701-02 unless the operator handing confirms it |
| MX3241 | BL634 leaf chain | Related drive chain, not the gearbox |
| MX3566 | Target sensor, wedge, with terminals | Related position sensor, not the gearbox |
| MX3760 | Spring tube assembly | Related spring/tube hardware, not the gearbox |
Not Intended For
- Left-hand WedgeSmart DC applications requiring MX3701-01
- WedgeSmart DC units where the parts diagram does not list MX3701-02
- HydraWedge, StrongArm, StrongArmPark, SlideDriver, SlideSmart, SwingSmart, HydraSwing, SwingRiser, or other HySecurity operator families unless HySecurity documentation specifically confirms fitment
- Replacing a chain, target sensor, spring tube, shear bolt, rod end, strap, limit switch, or controller board
- Repairs where the gearbox damage was caused by unresolved wedge binding, impact damage, chain misalignment, worn drive hardware, or frame distortion
- Bypassing kill switches, safety devices, controller protections, limits, or entrapment-protection systems
Important Compatibility Warning
The MX3701-02 gearbox is the right-hand WedgeSmart DC version. Before ordering, verify handing from the operator display, operator label, current parts diagram, and existing gearbox installation. The parts diagram and physical configuration should be checked before ordering.
If the gearbox failed, inspect the complete drive system. A damaged chain, misaligned strap, worn rod end, broken shear bolt assembly, spring tube problem, target sensor issue, or wedge panel binding can damage the replacement gearbox if the root cause is not corrected.
Features & Specifications
| Feature / Specification | Details |
| Manufacturer | HySecurity / Nice HySecurity |
| Part Number | MX3701-02 |
| Product Type | Gearbox with oil |
| Gearbox Style | Wedge gearbox where specified |
| Handing | Right hand / right handing |
| Common Description | Gearbox, with Oil, Wedge, Right Handing |
| Common Operator Family | Select HySecurity WedgeSmart DC right-hand models where specified |
| Fluid / Oil Note | Listed as gearbox with oil; confirm shipping condition and current service requirements before installation |
| Related Drive Components | Chain, target sensor, spring tube assembly, strap, shear bolt assembly, rod end, limit switch, and wedge pivot hardware should be inspected during service |
Also Known As / Related Part Numbers
- MX3701-02
- MX370102
- MX-3701-02
- HySecurity MX3701-02
- Nice HySecurity MX3701-02
- HYS-MX3701-02
- HYS MX3701-02
- HySecurity Gearbox, with Oil, Wedge, Right Handing
- HySecurity Wedge Gearbox with Oil, Right Hand
- HySecurity WedgeSmart DC Right-Hand Gearbox
- Wedge Gearbox with Oil, Right Handing
- MX3701-01 - related left-hand gearbox with oil, not the same handing
- MX3241 - related BL634 leaf chain, not the gearbox
- MX3566 - related wedge target sensor with terminals, not the gearbox
- MX3760 - related spring tube assembly, not the gearbox
- MX3395 - related shear bolt assembly, not the gearbox
- MX3237 - related rod end ball joint, not the gearbox
- MX3418 - related strap, not the gearbox
Related Parts and Accessories
- MX3701-01 left-hand gearbox with oil where the operator is left-hand
- MX3241 BL634 leaf chain where chain wear, elongation, or damage is present
- MX3566 target sensor, wedge, with terminals where position sensing is the issue
- MX3760 spring tube assembly where spring tube wear or damage is present
- MX3756 compression spring where the spring is worn or damaged
- MX3766 spring end guide and MX3767 spring guide piston where spring tube guidance parts are worn
- MX3395 shear bolt assembly where the breakaway/shear hardware is damaged
- MX3237 rod end ball joint where linkage movement or alignment is worn
- MX3418 strap where strap wear, bending, or damage is present
Technician Note
Before replacing the MX3701-02 gearbox, inspect the full WedgeSmart DC drive system. Gearbox damage can come from normal wear, but it can also be caused by a binding wedge panel, chain misalignment, worn leaf chain, damaged shear bolt assembly, bent strap, worn rod end, spring tube issues, target sensor problems, or impact damage.
Handing is one of the main ordering checks. MX3701-02 is the right-hand gearbox. If the operator is left-hand, the related MX3701-01 may be the correct gearbox instead. Do not rely only on visual comparison; confirm the current parts diagram and the operators handed configuration.
Before Ordering, Confirm
- The original or required part number is MX3701-02.
- The operator is a compatible HySecurity WedgeSmart DC model.
- The operator is right-hand, not left-hand.
- The current HySecurity parts diagram lists MX3701-02 for the gearbox position.
- The existing gearbox, chain, spring tube, strap, rod end, shear bolt assembly, target sensor, and limit switch have been inspected.
- The wedge panel moves freely and is not binding, sagging, bent, or damaged from impact.
- The failure is not caused by chain damage, sensor misalignment, spring tube binding, worn linkage, or frame distortion.
- The package contents and oil fill condition match the repair requirement.
- The operator has not been modified with non-original drive hardware, altered handing, or changed gearbox components.
Installation and Service Notes
- Disconnect power and follow proper lockout procedures before servicing the WedgeSmart DC operator.
- Secure the wedge panel and avoid pinch points before removing drive or gearbox hardware.
- Document chain routing, gearbox orientation, wiring nearby, target sensor position, and drive hardware before disassembly.
- Do not force the gearbox into misaligned drive components or distorted mounting points.
- Inspect the chain, spring tube, strap, rod end, shear bolt assembly, and wedge pivot hardware before installing the replacement gearbox.
- Confirm oil status and follow HySecurity service instructions before returning the gearbox to operation.
- After installation, check for smooth wedge movement, abnormal noise, correct travel, target sensor behavior, and secure drive hardware.
- Test kill switches, limits, vehicle detection, access-control inputs, controller protections, and all required safety devices before returning the operator to service.
Professional Advisory
The MX3701-02 gearbox is part of the WedgeSmart DC drive system. Service should be performed by a qualified gate technician when the repair involves gearbox replacement, drive chain service, wedge panel movement, spring tube hardware, target sensor setup, impact damage, heavy moving parts, or unknown prior modifications.
Do not bypass kill switches, limits, safety devices, controller protections, vehicle detection, access-control interlocks, or entrapment-protection equipment to keep the wedge operating. If the wedge binds, drops, moves unevenly, fails to seat, or shows structural damage, the full operator should be inspected before continued use.
Product Questions & Answers
What is the HySecurity MX3701-02?
The HySecurity MX3701-02 is a right-hand gearbox with oil for select WedgeSmart DC wedge operator applications where the parts diagram confirms this part number.
Is MX3701-02 the left-hand or right-hand gearbox?
MX3701-02 is the right-hand gearbox. The related left-hand gearbox is MX3701-01.
Does MX3701-02 include oil?
Yes. MX3701-02 is listed as a gearbox with oil. Current shipping condition should still be confirmed before installation.
Is MX3701-02 the same as MX3701-01?
No. MX3701-02 is the right-hand WedgeSmart DC gearbox, while MX3701-01 is the left-hand version. Handing should be verified before ordering.
What should be checked before replacing this gearbox?
Check operator handing, chain condition, spring tube assembly, strap, shear bolt assembly, rod end, target sensor, limit switch, wedge panel movement, and any signs of impact damage or binding.
Can gearbox failure be caused by other WedgeSmart DC parts?
Yes. Chain misalignment, binding wedge movement, damaged shear hardware, worn rod ends, spring tube issues, impact damage, or poor drive alignment can damage the gearbox or create similar symptoms.
Should a technician install the MX3701-02 gearbox?
Yes. This repair involves WedgeSmart DC drive components, heavy wedge movement, gearbox alignment, pinch points, and safety testing, so it should be handled by a qualified gate technician.
