580020 US Automatic Patriot RSL Intermediate Sprocket 1" bore 21 teeth #41 chain
The US Automatic 580020 is the 21-tooth intermediate sprocket used in the Patriot RSL slide gate operator drive train. It has a 1 inch bore and is used with #41 chain. This sprocket sits in the mechanical chain-drive system where proper alignment, bore size, tooth count, and chain fit are critical. If the intermediate sprocket is worn, loose on the shaft, or out of alignment, the gate may travel unevenly, the chain may ride poorly, or the operator may show extra mechanical strain. This part is commonly checked along with the pillow block bearings, drive shaft, output sprockets, motor sprocket, and short gear-motor-to-drive-sprocket chain. It should not be substituted with the 13-tooth or 16-tooth sprockets unless the correct parts diagram specifically calls for that part.
Compatible With
This part is commonly associated with the following US Automatic Patriot RSL applications. Always match the installed operator, part number, and parts diagram because several Patriot RSL parts look similar but are not interchangeable.
- US Automatic Patriot RSL slide gate openers
- Patriot RSL drive shaft and intermediate sprocket applications calling for 580020
- Patriot RSL #41 chain mechanical-drive assemblies
- AC and solar charged Patriot RSL installations with the matching drive layout
- US Automatic Patriot RSL slide gate operator
- Patriot RSL AC slide gate opener
- Patriot RSL solar slide gate opener
Features & Specifications
| Manufacturer | US Automatic |
|---|
| Product Type | Intermediate sprocket |
|---|
| Part Number | 580020 |
|---|
| Application | Intermediate sprocket in Patriot RSL #41 chain drive system |
|---|
| Compatible Operator Type | Patriot RSL chain-drive slide gate operator |
|---|
| Chain / Drive Notes | 1 inch bore, 21 teeth, #41 chain |
|---|
| Installation Notes | Match the installed Patriot RSL parts diagram before replacing mechanical or cover components. |
|---|
| Safety Notes | Do not bypass safety devices. Disconnect power and secure the gate before service. Use a qualified gate technician when electrical or unsafe movement issues are present. |
|---|
Also Known As / Related Part Numbers
The following numbers and search terms are commonly associated with this Patriot RSL service-part family. Related numbers are included for identification and cross-shopping only; they are not automatic substitutes unless the parts diagram confirms the same component.
- 580020
- USA 580020
- USAutomatic 580020
- US Automatic 580020
- Patriot RSL intermediate sprocket
- RSL 1 inch bore 21 tooth sprocket
- 21T #41 Patriot RSL sprocket
- Related: 580010 13-tooth output sprocket
- Related: 580015 16-tooth output sprocket
- Related: 580040 1 inch pillow block bearing
- Related: 610201 RSL gate drive shaft
- Patriot RSL earlier generation mechanical-drive parts when the parts diagram matches
- Related service numbers commonly searched with this part family: 570010, 570020, 580010, 580015, 580020, 580030, 580040, 590010, 590020, 590030, 590050, 590057, 590060, 590070, 610201, 620130, 640010, 640020, 640030, 640040, 680010
Technician Note
On Patriot RSL slide operators, chain alignment and mechanical fitment should be checked as a complete system. Inspect the chain path, sprocket wear, shaft play, bearing condition, bracket alignment, cover clearance, and manual release operation before putting the gate back in service.
Before Ordering Checklist
- Confirm the operator is a US Automatic Patriot RSL slide gate opener.
- Compare the installed part number, bore size, tooth count, chain size, cover style, or bracket location as applicable.
- Check whether the operator is an older or serviced unit with mixed-generation parts.
- Inspect related hardware for rust, bending, cracked plastic, worn teeth, loose set screws, damaged bearings, or missing fasteners.
- For electrical symptoms, uncontrolled movement, or missing safety devices, have the gate inspected by a qualified technician.
Professional Advisory
This product page is written for replacement-part identification and ordering support. Mechanical drive repairs should be performed with the gate secured and the operator disabled. If the gate is heavy, binding, moving unexpectedly, or missing required monitored safety devices, stop using the system until it can be inspected by a qualified gate technician.
Product Questions & Answers
Where is the 580020 used?
It is used as the 21-tooth intermediate sprocket in the Patriot RSL slide gate opener's #41 chain drive system.
Is this the same as the motor sprocket?
No. The motor sprocket is 580030 and uses a 1/2 inch bore. The 580020 has a 1 inch bore and 21 teeth.
What other parts should be inspected with this sprocket?
Check the pillow block bearings, drive shaft, #41 chain, motor sprocket, output sprocket, keyway, set screws, and chain alignment.
Can this part cause chain noise?
Yes. A worn or misaligned intermediate sprocket can cause chain chatter, grinding, uneven movement, and premature chain wear.
Does this fit every US Automatic gate opener?
No. It is for Patriot RSL slide gate operator applications where the parts diagram calls for 580020.
