Paul Cheffings | 21/10/2019 14:29:24 |
3 forum posts 1 photos | Hi For years my father has been building engines and repairing clocks as a hobby. Unfortunately he now has Alzheimers and I have been trying to help him finish an engine he started a few years ago. I have managed to break the insert in a boring bar and wondered if anyone might know where I can obtain a new insert from. The boring bar has the following number on it UJ 8-803-F-R, the insert is triangular, held in with a very small Torx screw. Measuring the size of the recess I think it would be around 5.5mm across. I haven't been able to find any information by searching for the reference number on the internet. Below is a photo of the boring bar. The key is there to stop it rolling so that the number is visible. Any help would be appreciated. Cheers Paul |
old mart | 21/10/2019 16:56:31 |
4655 forum posts 304 photos | I hope you have saved the bits of the broken insert. These charts may be of help in identifying the exact type. |
Paul Cheffings | 21/10/2019 17:11:55 |
3 forum posts 1 photos | Hi Unfortunately not as it disappeared and the piece left in the holder was so small you wouldn't be able to get any information from it. Cheers Paul |
David Standing 1 | 21/10/2019 17:19:13 |
1297 forum posts 50 photos | That appears to be a Komet boring bar. Take a look at the UJ R (RH) bars and inserts at the bottom of page 306 on the attachment:
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old mart | 21/10/2019 19:10:34 |
4655 forum posts 304 photos | It is very likely, that the cost of replacement inserts for this bar would far exceed the price of a cheap Chinese bar and inserts. |
mechman48 | 21/10/2019 19:19:17 |
2947 forum posts 468 photos | I have a couple of those boring bars & inserts from the co. in the link as shown in 'Old mart's post, worth the money, & work well. George. |
Ian P | 21/10/2019 19:30:34 |
2747 forum posts 123 photos | I have the identical Komet bar (8mm OD) which I bought with ten inserts in 1980something. The original Komet inserts have long since gone and whilst I have fitted other makes none have ever performed as well as the originals and the bar now just sits in a drawer. I cannot remember the part number for the tiny triangular tips I found, Jenny at JB tooling gave me one as a sample to try so it might be worth contacting her. Ian P
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Paul Cheffings | 21/10/2019 21:56:22 |
3 forum posts 1 photos | Hi Thanks to all who have replied. It looks like one of the cheap Chinese boring bars maybe the way to go as although I now know which insert I need I cannot find anywhere that actually sells them. Cheers Paul |
Howard Lewis | 21/10/2019 22:03:34 |
7227 forum posts 21 photos | If you cannot obtain inserts for your bar, at a reasonable price: Check the dimensions of your bar, and then contact Jenny Blackwell at JB Cutting Tools. She will be able to fix you up with something suitable, no doubt. Howard |
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