Jet belt drive bench lathe w ユーザーガイド

 

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To avoid twisting the bed, make sure the location to 
which the lathe will be moved is absolutely flat and 
level. Place a machinist’s level on the bed ways and 
check for level side-to-side and front to rear. If 
stand mounted, the stand must be fastened to the 
floor. (An optional JET stand is available for this 
lathe – order stock no. 321374.) 

Remove rust protectant from all surfaces with 
kerosene, diesel oil, or a mild solvent. Do not use 
gasoline, paint thinner, or lacquer thinner, as these 
may damage painted surfaces. After cleaning, wipe 
with a clean, dry cloth and cover all machined 
surfaces with a light film of machine oil. 

Swing open the drive assembly end guard, and 
mount the cover to the bottom of the guard using 
three screws. (See Drive Assembly Exploded View, 
index no. 11, for clarification.) 

Carefully read the grounding instructions on pages 
4 and 5. It is recommended that the BD920W Lathe 
be connected to a dedicated, minimum  25 amp 
circuit with a 25 amp circuit breaker or time delay 
fuse.  Local codes take precedence over 
recommendations. 

The Lathe bed is made of high-grade iron. By 
combining high cheeks with strong cross ribs, a bed 
of low vibration and rigidity is produced. The main 
motor is mounted to the rear of the bed (Figure 2). 

The headstock (Figure 3) is cast from high grade, 
low vibration cast iron. It is bolted to the bed with 
four screws and uses four adjusting screws for 
alignment. In the head the large main spindle is 
mounted on two precision taper roller bearings. The 
hollow spindle is a Morse taper No.3 with a 7/8” 
bore 

A quick change of the belt can be accomplished by 
easing the tension on the idler (Figure 4). 

To protect the machine against accidental damage, 
a clutch is fitted to the reduction pulley at the 130 
R.P.M. speed.