目次
1. To prevent over-tightening
The spring nut, which is used extensively on the YZF-R125 (5D7), will break if the tapping screw is over-tightened.
So, I now use this quick spinner / BE3-Q and handle / AB-53 as much as possible to prevent over-tightening.
This is a little different from the original application, but it is very useful.
2. Product description
1) Overview
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Manufacturer/brand | KYOTO TOOL CO., LTD. / KTC |
Parts Name | 9.5sq Quick spinner |
Parts Number | BE3-Q |
Country of origin | Japan |
Date of purchase | Circa 2012 |
Where to buy | Web store |
New/used | New |
Price buy [Yen] | – |
Regular price [Yen] | 2,046 |
Evaluation |
2) Appearance
<Wrench side>
<Socket side>
3) Uses and specification
① Uses
- The tool can be fitted between the ratchet handle and the socket to enable fast turning of the socket.
- The grip is shaped so that the angle of rotation can be easily recognized by touch in 90° increments, and the surface is marked in 30° increments to serve as a guide when tightening using the angle of rotation method.
- The grip is made of resin and is lightweight.
I often use it with KTC’s hexagonal bit socket BT3-04S etc.
<Attached to BT3-04S>
<Attached to BT3-04L>
② Specification
Overall length | 29.7 mm |
Outer diameter | φ36 mm |
Weight | 43 g (Actual measurements) |
3. Product Review
1) Good points
- Prevents damage to spring nuts.
- When used with hexagonal bit socket BT3-04S, it fits in the palm of your hand, so you can work with one hand
- After more than 12 years of use, the handle has been worn away, but it is still usable
- The red color looks great and adds a nice accent.
- Of course, it’s also very useful as an original fast turner.
2) Unsatisfied points
- Grooves on the sides of the handles get dirty and are difficult to clean (not a problem in use).
4. Summary
They are indispensable for tightening tapping screws.
I have not broken a single spring nut since because I am aware of over-tightening.
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