Marantec 91568, Sprocket Holder Assembly for Standard Chain Rail
The Marantec 91568 sprocket holder assembly is the standard chain rail sprocket support used on compatible Marantec chain-drive rail assemblies. It supports the chain drive at the operator end of the rail and helps maintain proper chain alignment as the trolley moves the door. When the sprocket holder is worn, cracked, or misaligned, the chain can run rough, chatter, bind, or create extra wear at the rail and trolley. This is a chain-rail-specific mechanical part. It should not be confused with 91567, which is for standard belt rails, or 88824, which is used on compatible heavy duty rail references. Because several listings note discontinued/no replacement status, inventory and availability should be confirmed before upload.
Compatible With
- Marantec standard chain rail assemblies where the parts diagram calls for 91568
- select chain-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 chain rail
- standard Marantec chain rail systems manufactured since 2013 where 91568 is listed
- Related standard chain rail service parts: 8030234 chain connector kit, 91566 rail end assembly, 95358 roller holder assembly, 115872 rail connector, 101018 header bracket, and 98875 chain reference tab where applicable
- Not for standard belt rail systems that call for 91567 or heavy duty rails that call for 88824
Features & Specifications
| Manufacturer | Marantec |
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| Product Type | Sprocket holder assembly |
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| Part Number | 91568 |
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| Application | Standard chain rail sprocket support |
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| Compatible Operator Type | Compatible Marantec chain-drive standard rail systems |
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| Drive Type | Chain drive |
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| Related Older Number | 8030339 appears as a related old number in some references |
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| Notes | Some listings note discontinued/no replacement status; confirm availability before upload |
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Also Known As / Related Part Numbers
Technician Note
If this part is unavailable, do not recommend a belt-rail sprocket holder as a substitute. Standard chain rail and standard belt rail drive hardware differ, and the wrong holder can cause tracking and safety issues.
Before Ordering Checklist
- Confirm the rail is a Marantec standard chain rail.
- Verify the parts diagram calls for 91568 or a documented related number such as 8030339.
- Confirm the item is still available before enabling sale if supplier listings show discontinued status.
- Inspect the chain, chain connector, trolley, and rail end assembly for related wear.
- Do not substitute 91567 or 88824 unless the manufacturer confirms a replacement path.
Professional Advisory
Chain rail repairs involve moving mechanical parts and drive tension. Disconnect opener power, secure the door, and check chain tension and trolley movement after repair. If the door is heavy or binding, correct the door issue before operating the opener.
Product Questions & Answers
What rail type does Marantec 91568 fit?
Marantec 91568 is for compatible standard chain rail assemblies where the parts diagram calls for this sprocket holder.
Is 91568 the same as 91567?
No. 91568 is for standard chain rails, while 91567 is for standard belt rails.
What is the older related number for 91568?
Some references list 8030339 as an older related number for the standard chain rail sprocket holder.
Is 91568 discontinued?
Some supplier references list 91568 as discontinued with no replacement. Confirm current inventory and supplier availability before upload.
Can I use a heavy duty sprocket holder instead?
No. Heavy duty sprocket holders such as 88824 should not be substituted for a standard chain rail part unless the manufacturer parts diagram confirms it.
