NICE / APOLLO A2018, MAIN SCREW FOR 816 ACTUATOR
The Nice Apollo A2018 main screw is a primary mechanical drive component inside compatible Apollo 416 and 816 style linear swing gate actuators. The main screw works with the gear train and extension tube to convert motor rotation into linear travel, allowing the actuator to push and pull the gate. This part is commonly reviewed when an actuator is slipping, grinding, binding, failing to extend smoothly, or showing mechanical damage in the screw-drive area. A worn main screw can also be found during front housing service after water intrusion, lack of lubrication, damaged seals, or an overloaded gate. Because the screw drive is tied closely to the spur gear, gear nut, extension tube, seal, bushings, bearings, and motor/pinion assembly, inspect the complete actuator drive path before ordering.
Compatible With
- Nice Apollo 416 swing gate actuators when the front housing or limit assembly calls for this part number
- Nice Apollo 416X swing gate actuators when confirmed by the installed parts diagram and actuator generation
- Nice Apollo 816 swing gate actuators used on many Apollo 1500, 1550, 1551, 1600, and 1650 swing gate systems
- Nice Apollo 816X swing gate actuators when the original part number, cable configuration, and housing layout match
- Compatible Nice Apollo linear actuator front housing or limit tower assemblies that specifically list this part number
- Apollo 1500, 1550, 1551, 1600, and 1650 swing gate systems using compatible Apollo 416 or 816 actuator arms
- Actuator front housing assemblies that list A2018 as the main screw
Features & Specifications
| Manufacturer | Nice Apollo |
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| Product Type | Main screw |
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| Part Number | A2018 |
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| Application | Actuator screw-drive replacement part |
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| Compatible Operator Type | Select Nice Apollo 416 and 816 linear swing gate actuators |
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| Common Service Area | Actuator front housing / extension tube drive assembly |
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| Notes | Main drive screw; verify actuator model and housing style before ordering. |
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Also Known As / Related Part Numbers
- A2018
- 2018
- Nice Apollo A2018
- Apollo A2018
- main screw
- actuator main screw
- screw drive
- front housing main screw
- related A2017 spur gear
- related A2019 limit screw
- related A2027 extension tube
- related A2006 AC gear nut
- related A2025 seal
Technician Note
A damaged main screw is often a symptom as well as a failed part. Confirm the gate is not too heavy, out of level, binding at the hinges, or mounted with poor geometry before returning the operator to service.
Before Ordering
- Verify A2018 is shown on the parts diagram for the installed actuator.
- Confirm the actuator is a 416/416X or 816/816X style arm before ordering.
- Inspect the extension tube, gear nut, spur gear, seal, and bearings for matching wear.
- Check for water intrusion, bent parts, or gate binding that may have caused screw damage.
- Plan to reset and test gate travel limits after actuator service.
Professional Advisory
Gate operator parts should be installed with power disconnected and the gate secured against movement. Actuator repairs can affect travel limits, force, and safe gate movement. For electrical diagnosis, internal actuator service, or any unsafe gate condition, use a qualified gate technician. Do not bypass photo eyes, safety edges, alarms, or other required safety devices.
Important Ordering Warning
A2018 is the main screw only. It is not a complete actuator, not the limit screw, and not the extension tube.
Product Questions & Answers
What is the A2018 main screw used for?
It is used in the screw-drive area of compatible Apollo 416 and 816 style linear actuators.
Is A2018 compatible with Apollo 416 actuators?
Yes, it is commonly listed for Apollo 416 and 416X actuators when the parts diagram calls for A2018.
Is this the same as the limit screw?
No. A2018 is the main screw. A2019 is the limit screw used in the limit adjustment area.
What are common symptoms of main screw problems?
Grinding, slipping, uneven extension, binding, or mechanical damage inside the actuator can point to screw-drive problems.
Should related parts be replaced at the same time?
Inspect related parts first. The spur gear, gear nut, extension tube, seal, bushings, and bearings may also need attention depending on wear.
