Chainsaw Repair

Chain - Grinders - Filing - Wood Milling - Tools - Welding - Machinist - Mowers - Tillers => Chain - Bars - Grinders - Filing => Topic started by: dannyupsolate on October 17, 2015, 06:46:32 pm

Title: stihl chain breaker spinner
Post by: dannyupsolate on October 17, 2015, 06:46:32 pm

says number 7 on casting just got  it at flea market 15 bucks. anyone know anything about them.

Title: Re: stihl chain breaker spinner
Post by: aclarke on October 17, 2015, 11:12:17 pm

Combo unit?

Title: Re: stihl chain breaker spinner
Post by: dannyupsolate on October 18, 2015, 06:22:49 am

correct is a combo says NG 7  big heavy thing

Title: Re: stihl chain breaker spinner
Post by: 660magnum on October 18, 2015, 09:50:31 am

What kind of shape are all the four breaker punches and did the three spinner heads and two thrust screws come with it? What about the breaker anvil (die)?

Those NG7's are rather expensive to buy a new one complete ($360 at Bailey's)

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB0QFjAAahUKEwiztLOQl8zIAhVMND4KHUzYBDg&url=http%3A%2F%2Fwww.stihlusa.com%2FWebContent%2FCMSFileLibrary%2Finstructionmanuals%2FBA_NG_7_GB.pdf&usg=AFQjCNGIZQ5PT_UHodRBIoidDcaYs2P2UQ&sig2=bg561K85xqiuDkjrzSo9Ig

(http://in1.ccio.co/YF/96/44/41dfCsApJL.jpg)

Title: Re: stihl chain breaker spinner
Post by: dannyupsolate on October 18, 2015, 10:14:13 am

no punch no die only one thrust washer and screw     otherwise looks unused

Title: Re: stihl chain breaker spinner
Post by: 660magnum on October 18, 2015, 10:38:30 am

I'm sure you can get your needed parts from the Stihl dealer

Title: Re: stihl chain breaker spinner
Post by: aclarke on October 18, 2015, 10:42:38 am

I bought one new from Stihl and it was well made but a pain in the ass to use in that the unit had to be flipped on my bench to effectively use the breaker/spinner. Poor ergonomics...

Title: Re: stihl chain breaker spinner
Post by: dannyupsolate on October 18, 2015, 10:53:23 am

yes maybe if I mount it on end of bench can stand it.  is punch same as oregon

Title: Re: stihl chain breaker spinner
Post by: aclarke on October 18, 2015, 11:25:34 am

Not sure on compatibility, looks the same as old style Oregon/Herr punch.

Title: Re: stihl chain breaker spinner
Post by: dannyupsolate on October 18, 2015, 12:49:54 pm

anyone know dimensions for the punch  I like the youtube guys needle bearing punch. I have antique metal lathe

Title: Re: stihl chain breaker spinner
Post by: 660magnum on October 18, 2015, 02:12:03 pm

The punches are made like the old style Oregons that were made by Herr.

Title: Re: stihl chain breaker spinner
Post by: dannyupsolate on October 18, 2015, 02:57:34 pm

If I seem like  I never broke and repaired a chain that is true.

Title: Re: stihl chain breaker spinner
Post by: 660magnum on October 18, 2015, 05:27:49 pm

Be prepared! is the Boy Scout motto

Title: Re: stihl chain breaker spinner
Post by: dannyupsolate on October 22, 2015, 10:06:00 pm

ok learning slowly about to try to make punch   got a 5/16 grade 8 bolt set up in  lathe will turn down shank to .250  to fit inside press leave shoulder in middle make easy to remove when it breaks cut set screw groove. will have to wait till I get punch block to cut length  on punch end. i need a dimension on a unused 3/8 lp rivet to know proper size for my punch end.  found a 1/2 inch 7 inch long fine thread bolt will make a rivet head former. if someone would give me dimension on rivet head forming dimple at end of  bolt it will help. this may be from any brand that forms a good rivet head. parts I got with it were for regular 3/8 I am making parts for 3/8 low profile

Title: Re: stihl chain breaker spinner
Post by: aclarke on October 22, 2015, 11:31:21 pm

Factory head diameter for stihl 3/8 LP is 4mm.    Shank is 3.97 and the "stub" that is formed into the shop made rivet head  (spinner) is 2.67mm

Title: Re: stihl chain breaker spinner
Post by: aclarke on October 22, 2015, 11:33:53 pm

Head height is .56mm   

Title: Re: stihl chain breaker spinner
Post by: dannyupsolate on May 09, 2016, 11:17:31 am

magnum was right. the old style oregon punch fit perfect.  new style spinner heads work.  I got three breakers and two spinners at the cow sale flea market for 20 bucks.