Unior Left Pedal Thread Insert - Set Of 10 - 5/8L X 24 TPI
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Product Information
Full details
This Unior Left Pedal Thread Insert set is designed for cyclists and mechanics needing to repair damaged pedal threads on crank arms. Its key benefit is providing a durable, precise solution for restoring crank integrity, preventing costly crank replacements. A potential caveat is the requirement for specific pedal taps and mechanical skill for installation. This set includes 10 inserts with precise inner and outer thread dimensions, made from premium flex plus carbon steel.
All features
| Model Part Number | 2362004000 |
|---|---|
| Brand | Unior |
Extended Product Information
FAQs
What size are the internal threads of the insert?
The internal thread dimension is 9/16 x 20 TPI, which is standard for most bicycle pedals.
What size are the external threads of the insert?
The external thread dimension is 5/8 x 24 TPI, which is what the insert will thread into on the crank arm.
What material are the inserts made from?
They are made from premium flex plus carbon steel for durability.
Do I need special tools to install these?
Yes, you will need a pedal tap with a 5/8 x 24 TPI thread to prepare the crank arm before installing the insert.
Can these be used to repair the right pedal thread?
No, these inserts are specifically designed for the left pedal thread, which has a reverse thread standard.
How many inserts are included in the set?
The set includes 10 pedal thread inserts.
What is the primary purpose of these inserts?
Their primary purpose is to repair damaged or stripped pedal threads in crank arms.
Troubleshooting
Insert does not thread smoothly into crank arm
Ensure the correct pedal tap (`5/8 x 24 TPI`) was used to prepare the crank arm. Verify the tap is clean and sharp. Check for any debris in the crank arm bore.
Repaired thread feels loose
The insert may not have been fully seated or secured properly. Re-evaluate the tapping process and ensure the insert is firmly in place before threading a pedal.
Pedal still difficult to thread after insert installation
Verify the correct pedal thread standard (`9/16 x 20 TPI`) is being used for the pedal. Ensure the insert's internal threads are clean and free of any burrs or debris.
Pros and Cons
Pros
- Restores damaged crank threads, saving the crankset.
- Made from durable, high-quality carbon steel.
- Includes 10 inserts for multiple repairs.
- Precise thread dimensions for a secure fit.
Cons
- Requires specialized pedal taps for installation.
- Installation requires mechanical skill and precision.
- Not a universal solution; specific crank thread damage is required.
- Adds complexity to the repair process compared to simply replacing a crank.
Setup, Compatibility & Care
Setup: Installation requires specialized tools, specifically a pedal tap matching the `5/8 x 24 TPI` outer thread dimension of the insert. The damaged crank arm thread must first be tapped using the appropriate pedal tap to create a clean surface for the insert. The insert is then carefully threaded into the prepared hole. Ensure the insert is fully seated and properly aligned before proceeding.
Compatibility: These inserts are specifically designed for repairing the *left* pedal thread on crank arms, which typically has a `9/16 x 20 TPI` thread. The insert itself has an outer dimension of `5/8 x 24 TPI` to thread into the prepared crank arm.
Care: No specific care is required for the inserts themselves once installed. Ensure the crankset and pedals are maintained according to standard bicycle maintenance practices.