NICE / APOLLO A2019, LIMIT SCREW FOR 816 ACTUATOR
The Nice Apollo A2019 is the limit screw used in compatible Apollo 416 and 816 style actuator limit assemblies. This smaller precision component is part of the mechanism that helps establish reliable open and close travel positions. It is commonly replaced when the original screw is damaged, stripped, missing, corroded, or will no longer allow proper limit adjustment. Limit screw problems can show up as inconsistent stopping, overtravel, failure to reach the correct open or closed position, or a limit assembly that will not hold adjustment. Because the A2019 works with the magnetic block, limit tower, proximity switch, bushings, and front housing parts, it should be matched to the installed actuator and parts diagram 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 416, 416X, 816, and 816X models when the limit assembly calls for A2019
- Apollo 1500/1550/1551 and 1600/1650 systems using compatible 416/816 style actuators
- Internal magnetic limit assemblies using the matching limit screw design
Features & Specifications
| Manufacturer | Nice Apollo |
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| Product Type | Limit screw |
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| Part Number | A2019 |
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| Application | Internal limit adjustment and stop-position service 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 / internal limit assembly |
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| Notes | Precision limit screw; not the main drive screw. |
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Also Known As / Related Part Numbers
- A2019
- 2019
- Nice Apollo A2019
- Apollo A2019
- limit screw
- actuator limit screw
- screw for magnetic limit assembly
- related A2002 brass block with magnets
- related A2003P plastic limit block
- related A2004 proximity switch
- related A2038 complete limit tower assembly
Technician Note
Limit issues are not always caused by the screw. Inspect the magnetic block, switch, tower, wiring, and actuator geometry before assuming A2019 alone will correct the travel problem.
Before Ordering
- Confirm the original part number or parts diagram calls for A2019.
- Verify whether the installed limit tower is intact and not cracked or loose.
- Inspect the magnetic block, plastic block, proximity switch, and wiring for related damage.
- Do not confuse A2019 with the larger A2018 main screw.
- After replacement, set and test open/close limits with the gate operating safely.
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
A2019 is a limit screw only. Incorrect limit setup can cause overtravel or unsafe gate movement, so final travel adjustment should be checked carefully.
Product Questions & Answers
What does the A2019 limit screw do?
It is part of the limit adjustment mechanism that helps set actuator open and close stopping points.
Is A2019 the same as A2018?
No. A2019 is the limit screw, while A2018 is the main screw used for actuator drive movement.
Will it fit Apollo 816 actuators?
It is commonly listed for Apollo 816 and 816X actuators when the internal limit assembly uses this screw.
Can this fix a gate that runs past its limit?
It may if the original limit screw is damaged, but the switch, magnetic block, wiring, and control setup must also be checked.
Should the gate be tested after replacing this part?
Yes. The open and close limits should be reset and tested under safe operating conditions after any limit assembly repair.
