Shimano Cone Spanner - 20 mm
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Product Information
Full details
The Shimano TL-HS40 is a professional-grade 20mm cone spanner designed for home mechanics and workshop technicians who require precision and durability during hub maintenance. This hardened steel tool provides the exact fit necessary to adjust cup-and-cone bearing systems without damaging delicate hardware. While it offers superior leverage and a perfect fit for specific Shimano components, users should note that it is a single-size tool, necessitating additional spanners for hubs that require different sizes on the locknut and cone.
All features
| Model Part Number | TLHS40 |
|---|---|
| Brand | Shimano Workshop |
Extended Product Information
FAQs
Is this wrench suitable for professional bike shops?
Yes, the TL-HS40 is a professional-grade workshop tool designed for intensive, daily use.
Can I use this on non-Shimano hubs?
Yes, provided the hub cone uses a 20mm flat measurement, this tool will work regardless of the brand.
What is the material of the tool?
It is constructed from high-quality, hardened steel for maximum durability.
Does this tool come in other sizes?
The TL-HS40 model is specific to 20mm; other sizes in the same professional series are available under different model numbers.
How do I prevent the tool from rusting?
Wipe clean of any grease or moisture after use and store in a dry, temperature-controlled environment.
Can I use this to tighten the locknut?
The TL-HS40 is primarily designed for the cone; while it may fit locknuts of the same size, always ensure you have the correct leverage and fit before applying torque.
Troubleshooting
Wrench feels loose on the hub cone
Verify the hub flat measurement; the TL-HS40 is exclusively designed for 20mm flats and will not fit 19mm or 21mm components.
Difficult to fit in tight hub gap
Ensure the locknut is sufficiently loosened to create working space; if the hub design is exceptionally recessed, verify the specific clearance needs of your hub model.
Tool slipping during high torque
Check if the cone flats are already rounded; if the wrench is flush but still slipping, apply firm, steady pressure perpendicular to the axle to maintain full contact.
Pros and Cons
Pros
- Perfect, slip-free fit for 20mm hub components
- Extremely durable hardened steel construction
- Slim design fits into confined hub spaces
- Professional grade reliability
Cons
- Fixed size (20mm only) requires owning other sizes for complete hub service
- Lack of a cushioned handle may cause discomfort during long sessions
- Requires proper technique to avoid marring the finish of polished hub parts
Setup, Compatibility & Care
To use the TL-HS40, ensure your hub specifically requires a 20mm wrench size by measuring the cone flats with calipers. During maintenance, always seat the wrench fully onto the flats to distribute pressure evenly across the steel surface. To maintain the tool, wipe it down with a clean, lint-free cloth after every use to remove grease and metal filings. Store it in a dry location, such as a tool board or drawer, to prevent oxidation. Avoid using the wrench as a prying tool, as this can bend the thin head profile, even with hardened steel construction.