Jet JDPE-20EVS-PDF, Operating Instructions And Parts Manual

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13
8.7.4 Speeds for high speed steel drills
Material
Speed
(SFPM)
Alloy Steel — 300 to 400 Brinell 20-30
Stainless Steel 30-40
Automotive Steel Forgings 40-50
Tool Steel, 1.2C 50-60
Steel, .4C to .5C 70-80
Mild Machinery Steel, .2C to .3C 80-110
Hard Chilled Cast Iron 30-40
Medium Hard Cast Iron 70-100
Soft Cast Iron 100-150
Malleable Iron 80-90
High Nickel Steel or Monel 40-50
High Tensile Bronze 70-150
Ordinary Brass and Bronze 200-300
Aluminum and its Alloys 200-300
Magnesium and its Alloys 250-400
Slate, Marble, and Stone 15-25
Plastics and similar materials (Bakelite) 100-150
Wood 300-400
Titanium Alloys 10-25
Titanium Alloy Sheet 50–60
Note: In cases where carbon steel drills are applicable, the
drill should be run at speeds of 40 to 50 percent of those
given above.
Table 3
9.0 User-maintenance
9.1 General maintenance
1. After each use, wipe down the machine with a
clean rag and apply a light coat of oil to
exposed metal surfaces to inhibit rust.
2. Confirm that machine is properly lubricated.
See sect. 9.3.
3. Keep table and T-slots clean and free of
debris. Use a brush to clear shavings, not bare
hands.
4. Periodically use compressed air or vacuum to
clear any dust off motor fan. Use a vacuum to
clear dust from cooling fan grill on control box.
5. Periodically check power cords to inverter,
motor, lamp, etc. If any damage is found
replace the cord immediately.
6. If drill press will not be used for an extended
period, release latch (M, Figure 8-1) to reduce
stress on belts.
9.2 Additional servicing
Any additional servicing should be performed by
authorized service personnel.