peterh5322
Diamond
- Joined
- Dec 15, 2002
- Location
- Monterey Bay, California
Presented for your amazement and amusement is a series of YouTube videos on the repair of a Hardinge-Sjogren 5C center gear, which is actually the closer on all Sjogrens, whether 5C, 2J or other.
Hardinge got out of the Sjogren workholding market some time ago, and ATS Workholding is the successor.
A few years ago, a center gear for a 2ADC (special 10EE model, Sjogren 2J collets, small 9" handwheel for operating up to 4,000 rpm) used to be about $120, but the prices have since doubled.
If, as I was, presented with an eBay 2ADC (price, about $125) which would close a brand-new 2J collet, but would not and could not close a shop-worn 2J collet, it makes good sense to repair the center gear ones-self.
This ...
https://www.youtube.com/watch?v=aZfNzOZLNQc&list=PLh03W57xztwjxmeASdygBcnmIPCeQS379
(Sjogren repair, Part 1, starts at about 11:15)
https://www.youtube.com/watch?v=dFVgso2_HV8&list=PLh03W57xztwjxmeASdygBcnmIPCeQS379&index=2
(Part 2 of Sjogren repair)
https://www.youtube.com/watch?v=QmY8CrA2sMc&index=3&list=PLh03W57xztwjxmeASdygBcnmIPCeQS379
(Part 3, and conclusion, of Sjogren repair)
... series of YouTube videos shows you how, for a 5C Hardinge-Sjogren, but this technique would work for an original (pre-Hardinge) Sjogren, or a current (post-Hardringe) Sjogren, and probably for any version in between.
Sjogrens have been continually made ... by someone ... since Sjogren patented his design in 1929.
Yes ... nearly 90 years ago!
Enjoy!
Hardinge got out of the Sjogren workholding market some time ago, and ATS Workholding is the successor.
A few years ago, a center gear for a 2ADC (special 10EE model, Sjogren 2J collets, small 9" handwheel for operating up to 4,000 rpm) used to be about $120, but the prices have since doubled.
If, as I was, presented with an eBay 2ADC (price, about $125) which would close a brand-new 2J collet, but would not and could not close a shop-worn 2J collet, it makes good sense to repair the center gear ones-self.
This ...
https://www.youtube.com/watch?v=aZfNzOZLNQc&list=PLh03W57xztwjxmeASdygBcnmIPCeQS379
(Sjogren repair, Part 1, starts at about 11:15)
https://www.youtube.com/watch?v=dFVgso2_HV8&list=PLh03W57xztwjxmeASdygBcnmIPCeQS379&index=2
(Part 2 of Sjogren repair)
https://www.youtube.com/watch?v=QmY8CrA2sMc&index=3&list=PLh03W57xztwjxmeASdygBcnmIPCeQS379
(Part 3, and conclusion, of Sjogren repair)
... series of YouTube videos shows you how, for a 5C Hardinge-Sjogren, but this technique would work for an original (pre-Hardinge) Sjogren, or a current (post-Hardringe) Sjogren, and probably for any version in between.
Sjogrens have been continually made ... by someone ... since Sjogren patented his design in 1929.
Yes ... nearly 90 years ago!
Enjoy!