Soft Jaw (raw claw) reforming is performed during lathe turning operations that require precision. You think it is an unavoidable process to ensure a firm grip without any displacement or misalignment...don't you?
In fact, there is a revolutionary T-nut that overturns the common sense of setup and eliminates the need to reform the jaws! Why is it not necessary to reform the jaws even after detaching and attaching them? In this article, we will reveal the mechanism of Kitagawa's proprietary, novel T-nut that overturns the conventional wisdom of setups.
No jaw reforming required !!
What is the revolutionary T-nut "Tnut-Plus“?
"Tnut-Plus“ developed by Kitagawa is a dedicated T-nut for its standard chuck BR Series that eliminates the need for reforming soft jaws. Even if they are detached from the chuck, they can be attached to the same position over and over again, maintaining the same gripping accuracy as immediately after molding.
★ Advantages of Tnut-Plus
◎ No jaw reforming required
◎ Significantly reduces setup time
◎ Easier setup and changeover operations
◎ Less frequent purchase of soft jaws
Setup time reduction with Tnut-Plus
The following is a trial calculation on how much time will be saved in setup time if the reforming of soft jaws is no longer necessary:
= 450 hours saved per year
How is it possible to maintain gripping accuracy even when soft jaws are detached and attached?
Introducing a revolutionary mechanism that Tnut-Plus achieves zero gaps.
＜Conventional T-nuts＞
Designed with room to spare to fit in the groove of the master jaw and soft jaw. Since there is a slight gap, the position of the nut shifts each time it is attached, resulting in deteriorated gripping accuracy.
＜Structure of Tnut-Plus>
Design with unevenness on the side.
The convex part is wider than the jaw groove.
One might think that it would be impossible to fit in Jaw's groove. However, the Tnut-Plus fits in a tilted state to the master jaw and the soft jaw. When the bolt is tightened in this state, the serration engagement forces the two grooves and Tnut-Plus to straighten. The Tnut-Plus, which is forcibly trapped in the narrow jaw groove, fits snugly with a slight deformation, resulting in a zero gap. Tnut-Plus is a product of a proprietary technology that is patented in Japan.
Chance to try together with BR chuck! Discount campaign is underway
Tnut-Plus is a special T-nut developed to maintain the repeatability of Kitagawa's “BR series” chucks below 0.01 mm T.I.R. We are currently conducting a worldwide promotion for customers to experience the benefits of using together with the series
・ Tnut-Plus customers will also receive soft jaw offer at a promotional price!
Prices and periods vary by country and region.
・ Tnut-Plus size range: 6 / 8 / 10 / 12inch (fits BR series chucks)
・ Up to 50% discount from the list price
Kitagawa soft jaw compatibility chart
| Jaw model | Applicable chuck model | Shape | Set quantity |
| SJ06B1 | BR06, BB206, ML06, N-06, NL06, QJR07, AS06, NRC06 | 2 | 3 |
| SJ06L1A | B-206, BS306, HOH-206, BL206 | 2 | 3 |
| SJ08A1 | BRT08, BT208, BBT208, NLT08, AT08 | 1 | 3 |
| SJ08B1 | BR08, B-208, BB208, BS308, BL-208, HOH-208, ML08, DL208, N-08, NL08, AS08, NRC08, QJR08 | 2 | 3 |
| SJ10A1 | BRT10, BT210, BBT210, NL10, AS10, NRC10, NLT10, AT10 | 1 | 3 |
| SJ10B1 | BR10, B-210, BB210, BS310, BL-210, UVE200K, UVE250K, HOH-10K, QJR10, N-10 | 2 | 3 |
| SJ12A1 | DL212, HOH-12K, N-12, NL12, NLT12 | 1 | 3 |
| SJ12N1 | BR12, B-212, BB212, BL-212, QJR12, BT212, BBT212, BLT212 | 1 | 3 |
