Marantec 91567, Sprocket Holder Assembly for Standard Belt Rail
The Marantec 91567 sprocket holder assembly is the operator-end sprocket support used on compatible Marantec standard belt rail systems. On a belt-drive opener, the sprocket holder keeps the belt drive aligned and supported as the motor transfers motion into the rail. When this part is worn, cracked, loose, or misaligned, the opener may still run but the belt can track poorly, chatter, slip, or create extra strain on the trolley and rail. This is a mechanical rail repair part, not an electronic control component, and it should be selected by rail style. Standard belt rail, standard chain rail, and heavy duty rail assemblies use different sprocket holder parts, so the rail label and parts diagram matter more than the opener head model alone.
Compatible With
- Marantec standard belt rail assemblies where the parts diagram calls for 91567
- select belt-drive Marantec openers such as Synergy 260, Synergy 270, Synergy 280, Synergy 360, Synergy 370, Synergy 380, Synergy Solo, M50, and M55 when equipped with the standard belt rail
- Related standard belt rail service parts including 8030196 belt connector, 91566 rail end assembly, 95358 roller holder assembly, 115872 rail connector, and 101018 header bracket references when the rail package matches
- Not for heavy duty 1.2mm / 18 gauge rails, Q7900 / M4900E heavy-duty rail applications, or standard chain rail assemblies that call for 91568
Features & Specifications
| Manufacturer | Marantec |
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| Product Type | Sprocket holder assembly |
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| Part Number | 91567 |
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| Application | Standard belt rail sprocket support |
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| Compatible Operator Type | Residential Marantec belt-drive rail systems |
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| Drive Type | Belt drive |
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| Rail Type | Standard belt rail |
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| Notes | Not for heavy duty rails or standard chain rail sprocket holder applications |
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Also Known As / Related Part Numbers
- 91567
- MAR-91567
- Marantec belt sprocket holder
- Marantec standard belt rail sprocket holder
- Belt standard rail sprocket holder
- Related parts: 8030196, 91566, 95358, 115872, 101018
- Not the same as 91568 or 88824
Technician Note
If the belt is frayed, stretched, or riding off-center, inspect the belt connector, rail end assembly, trolley, sprocket holder, and rail alignment before replacing only one part. A new 91567 will not correct a bent rail or wrong belt length.
Before Ordering Checklist
- Confirm the rail is a Marantec standard belt rail.
- Match the original rail parts diagram to part number 91567.
- Do not order this for a standard chain rail or heavy duty rail.
- Check the belt, belt connector, trolley, and rail end assembly for related wear.
- Release spring tension and follow rail service instructions before replacing mechanical rail parts.
Professional Advisory
Garage door rail repairs require the opener to be disconnected and the door secured so the trolley and belt are not under unsafe load. If the door is heavy, unbalanced, or binding, correct the door problem before replacing opener rail parts.
Product Questions & Answers
What rail type does Marantec 91567 fit?
Marantec 91567 is for standard belt rail applications where the rail parts diagram calls for this sprocket holder assembly.
Is 91567 the same as 91568?
No. 91567 is for standard belt rail applications, while 91568 is the standard chain rail sprocket holder assembly.
Can I use 91567 on a heavy duty Marantec rail?
No. Heavy duty rail applications commonly use different parts, such as the 88824 sprocket holder where specified.
What symptoms suggest the sprocket holder may be worn?
Noise at the operator end of the rail, poor belt tracking, loose belt movement, binding, or visible cracking around the sprocket holder can point to this area.
Do I need to reprogram the opener after replacing 91567?
No programming is normally required for this mechanical rail part, but travel and force settings should be checked after the rail is reassembled and tensioned correctly.
