TMP4100-Series Installation/Maintenance
33480D01.DOC 2-13
The recommended grinding wheels for the various pin material are listed below. The minimum pin lengths
allow for only about a 3% reduction in the total length during reconditioning. Therefore, only the smallest
amount of material necessary to obtain a sharp point should be removed. Several small “cuts” should be taken,
instead of larger ones, to avoid removing more material than necessary and to avoid overheating the pin.
PIN MATERIAL GRINDING WHEEL
COMPOSITE METAL ALUMINUM OXIDE (PINK 12A, BEST)
TUNGSTEN CARBIDE SILICONE CARBIDE (GREEN 39C)
WARNING
Read the Material Safety Data Sheets (MSDS) sheets, included in the
Appendix of this document, prior to reconditioning pins to become familiar
with reconditioning hazards.
Always wear a respirator, safety glasses, and gloves when grinding metal.
CAUTION
Use the appropriate precautions, coolant, and abrasive for the pin material
and the grinding techniques described in the MSDS.
The following will assure properly reconditioned pins:
1. Remove the impact pin / pin cartridge from the marking head. (see replacement procedure)
2. Mount the pin in the fixture, making sure that the pin is supported near its point. This fixture must be
capable of rotating the pin during the grinding operation.
3. Use the proper abrasive wheel for the pin material.
4. Coolant should be used.
5. Keep the abrasive wheel dressed for a straight conical-shaped point on the pin.
6. Set the fixture to obtain the desired pin cone angle.
7. Grind the pin to a sharp point, while continually rotating the pin.
8. Make several light “cuts” to reduce chatter and keep the pin cool. This reduces pin material waste.
9. Install the impact pin / pin cartridge onto the marking head. (see replacement procedure)
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