Delta 46-460ST, 46-455 Changing Lathe Speeds, Speed Recommendations for Midi Lathe

CHANGING LATHE SPEEDS

To reduce the risk of injury, do not operate lathe with pulley cover door open.

For the 46-455 lathe, the lathe speed is determined by one of five pulley sets (See Changing Pulleys section below.) The pulleys with the 46-455 lathe provide five different speed settings: 500, 950, 1550, 2700 and 4000 RPMs.

The 46-460 lathe is equipped with electronic variable speed control. Changing among the three pulley sets (see Changing Pulleys section below) determines the lathe's speed range and a control knob dials the speed up or down within that range. The pulleys with the 46-460 lathe provide three different speed ranges: 250-750 RPMs, 600-1800 RPMs and 1350-4000 RPMs.

CHANGING PULLEYS (46-455 and 46-460)

To reduce the risk of injury, do not operate lathe with pulley cover door open.

To move the belt between pulleys:

1.Lift up pulley cover (X) Fig. 14.

2.Pull down belt tensioning lever (Y) Fig. 15 to release belt tension.

3.Open lower side door (AA) Fig. 16 and move belt to desired pulley set according to the speed chart on inside of pulley cover (X) Fig. 14 NOTE: Be sure the grooves on the inside of the belt (BB) Fig. 17 fully engage the grooves (CC) on both pulleys and that the belt does not hang off the edge of the pulley.

4.Lift belt tensioning lever (Y) Fig. 15 up until it snaps into place.

5.Close both the lower side door (AA) Fig. 16 and the pulley cover (X) Fig. 14 securely.

To adjust belt tension:

SPEED RECOMMENDATIONS FOR MIDI LATHE

The following guidelines are approximate and must be reduced if the piece you are working on is out of balance. These speeds are only for side grain pieces. Reduce speed and take special care when cutting end grain.

RECOMMENDED SPEEDS (RPMs)

	Roughing		Finishing
Diameter of work	Low	High	Low	High
Under 2 in.	950	1500	1900	3000
(51 mm)
2 in. to 4 in.	500	750	1500	2300
(51 mm to 107 mm)
4 in. to 6 in.	500	750	1500	2300
(107 mm to 152 mm)
6 in. to 8 in.	250	500	900	1500
(152 mm to 203 mm)
8 in. to 10 in.	250	500	900	1500
(203 mm to 254 mm)
10 in. to 12 in.	250	500	900	1500
(254 mm to 305 mm)
	Fig. 18

X

Fig. 14

Y

Fig. 15

AA

Fig. 16

CC BB

Fig. 17

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