Tegara BT 40 Pull Stud Retention Knob CNC BT40 Taiwan New
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We don't sell pull stud, we sell pull stud life!
Made in Taiwan!
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| SKU | 202-7220 |
|---|---|
| BRAND | Tegara |
| HEAD DIAMETER D1 | 0.594 |
| HEAD ANGLE | 45 |
| DRAWBAR THREAD SIZE | M16x2.0 |
| MACHINE TAPER SIZE | BT40 |
| NECK DIAMETER D2 | 0.406 |
| PILOT D4 | 0.669 |
|---|---|
| OVERALL LENGTH L | 2.534 |
| SHOULDER TO HEAD L1 | 1.251 |
| SHOULDER TO END L2 | 1.55 |
| COOLANT HOLE | No |
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STRENGTH, PRECISION, EFFICIENCY
The retention knob is a key ingredient not only to the overall performance of the tool holder and cutting tool life, but also to maintain a safety standard on any machine shop floor. We choose SNCM420 (SAE 4320) alloy steel, with high nickel alloy content, for its high tensile strength to withstand strong centrifugal force, high load force, high feed rate, and difficult-to-machine material in the era of current CNC machining environment. The ultimate tensile strength of SNCM420 alloy steel is 980 MPa and our material is made in Japan by a very reputable steel manufacturer.
To maintain the tight tolerance of key dimension on a retention knob, we integrate the Marposs Unimar S measurement head which has a repeatability within 0.1 micron into our grinding process. To further maximize production output, we utilize robotic arms to load and unload a retention knob bar stock into a CNC grinder. Additionally, our retention knobs are roll threaded which provides higher strength and excellent thread quality, compared to others which are cut threaded. |
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Automation in Manufacturing We constantly evaluate our manufacturing process and trying to optimize the cycle time while maintain the top notch quality of our retention knob. Automation in manufacturing process has been a game changer in our industry and we are able to make things faster and more accurate. By integrating the Marposs Unimarr measurement head into the retention knob's grinding process we are able to monitor key dimension on EACH retention knob, and the productivity of a CNC grinder is maximized with the robotic arm to automatically load and unload retention knob stock into the CNC grinder. We are passionately chasing speed and accuracy and that is how we can maintain our competitive edge. |
| Concentricity Concentricity is inspected with a Mahr Millimess 1003 Dial Comparator which has a 1 micron (um) graduation and 0.5 micron (um) repeatability to ensure each batch production of the retention knob is true to the spindle center line. |
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Optical Measurement A critical dimension on every retention knob is the height of the loading contact point and the height of un-loading contact point. When this two dimensions are not within tolerance, there could lead to improper engagement with main spindle and even cause severe damage to the retention knob's rigidity. This two dimensions are inspected on an optical tool presetter that is made in Italy by a world-renowned manufacture and measurement are monitored in micron (um). |
- Each retention knob is inspected individually by magnetic particle test to ensure no cracks are present in the body
- Knob are made to the applicable stands such as ANSI, JMTBA, DIN
- Made from alloy steel 5155, hardened and heat treated to 58 +/-2 RC
- Fully ground on all critical surface including a pilot under the flange of retention knob for full contact between tool holder's taper end and retention knob
- Precision finished on the bottom of the flange to improve fitting with the bottom nose of the taper on the tool holder
- This pull stud is compatible with the following:
- J&M JM17126
- TJ Davies PS-554
We also have retention knob for Fadal, Mazak, Hurco and other mill, please contact us 1-630-443-3244 or visit our Ebay store:
All Available to Ship NOW! at Fixed Prices
SHIPPING: UPS Ground
Buyer pays ACTUAL UPS shipping & insurance, and a $3.00 handling fee for this item to be shipped to all states within the continental United States. Hawaii, Alaska & and other United States Territories will ship via UPS BLUE. Canada will pay actual shipping costs plus duty fees via UPS.
We can combine other auctions or store items to save on shipping. You may ask for freight cost before buying tools. Shipment will be made the same day as your payment is received and an UPS tracking number will be email to you. If your order is being shipped to an address outside of the United States, local consumer tax and/or customs duty , brokerage charges may apply and the package's recipient may need to pay these to clear customs.
Illinois residents add 8% sales tax.
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