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ANSI
JIS
ISO
JMTBA |
DIN
CAT
BT40
P40T |
We carry over 500 different varieties of Retention Knobs
manufactured to U.S., German and Japanese
standards.
We also carry a myriad of specials to service
your Retention Knob requirements. |
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With our new high-torque retention knobs, you can get even more life out of your machines & tools. Read about how our high-torque knobs are changing the industry. The high-torque retention knobs are designed to be balanced dynamically from end to end, which make it much easier to keep balanced toolholders within tight balancing tolerances after installation.
J&M Machine is your complete Retention Knob / Pull Stud source
to service your requirements. We carry over 500 different varieties of retention knobs manufactured to U.S., German and Japanese standards as well as a myriad of specials. J&M Machine is the leader in manufacturing certified,
quality Retention Knobs and Pull Studs.
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RETENTION KNOB PRODUCT INFORMATION:
- J&M Retention Knobs are MADE IN THE USA with material from the USA.
- J&M Retention Knobs have better finishes than are required by
International Standards, reducing the likelihood of cracking.
- Written Inspection Records are kept on every work order/lot number
that we manufacture. This means that the same inspection criteria are used
as if the parts were for aircraft.
- Parts are Black Oxided to prevent rust.
J&M Machine Retention Knobs are shot peened to relieve stress in the material,
remove burrs, radius corners, and improve the finish of the knob. This process
improves the durability, extends the life and reduces the likelihood of the
Retention Knob cracking.
If the Retention Knob breaks when roughing with an end mill, the down time
may be from 2 to 10 weeks depending on the severity of the damage. The repair
may be as simple as replacing the tool holder and Pull Studs and regrinding
the spindle in house to clean up any damage that has been done. Or it may require
the replacement of the spindle by factory repairmen. The repair cost may run
fruom $3,500 to as high as $40,000 per crash.
You can see that it is more cost-effective to keep track of the Pull Studs'
time in use and the type of duty cycle they have had. For this reason, J&M
Machine has Laser Marked Retention Knobs with the month and year manufactured and serial
number on the flange (S/N 03/02- 000323). This information can be used in a
safety log.
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Use our powerful, interactive Retention
Knob Identification / Design a Special Retention Knob form to cross-reference
any knob you have and we'll provide you with a Retention Knob / Pull Stud that fits your
machine. Or, you can supply us with the custom dimensions to request a special
Retention Knob / Pull Stud to be made. |
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When buying from your
local distributor, always
look for this label and set
your course for quality!
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LABELS...LABELS...LABELS...
Many manufacturers have machines which use different Retention Knobs or Pull
Studs. These labels are used to identify the type of Retention Knobs or Pull
Studs used on a machine.
You can stick them to a machine, put them in the tool cabinet, place them in
the machine operation manual or for reference, place them in the rolodex card
file. This way you insure that you order the correct Retention Knobs the next
time you order.
RETENTION KNOB AND PULL STUD LABELS HAVE:
- Supplier's name
- Part number
- Phone number
- Short description of Retention Knob or Pull Stud
- Drawing of Knob / Stud
- Warning statement
- Order/lot number of shipment.
Extra labels with peel-off backing are supplied upon request.
Protect Retention Knob or Pull Stud Information
by using laminated labels in oily areas. The
next time you order 20 Retention Knobs, tell your distributor to include your
four complimentary labels (3 peel-off labels and 1 laminated label for oily applications)
with your next tooling package. |
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