22
Fitting the Standard Jaws to the SC3 & SC4
Before use, a set of jaws must be secured to the chuck
body. The chuck slides are numbered as shown in Fig
8.9. Each jaw is also numbered as shown in Fig 8.10.
Both chucks use a geared scroll mechanism to adjust the
positions of the slides. The SC3 is controlled using a key
with a pinion to turn the scroll, as shown in Fig 8.11.
The SC4 uses an 8 mm hex wrench key to adjust the
jaws, as shown in Fig 8.12.
In both cases, the keys must be turned clockwise to close
the jaws and anti-clockwise to open them.
Please note: There is a stop on jaw slide number
1 which stops the jaws from coming away from
the body of the chuck. On reaching the fully
open position, never try and force the jaws to
open further.
Warning: When using the standard jaws or the
deep wood screw, always start the lathe at the
lowest possible speed. Only increase the speed
of the lathe if you are confident this will not risk
the workpiece coming away from the chuck. For
further information please see the chapter of
this manual entitled Intended Use of the Lathe
or seek professional tuition.
Important: The standard 50 mm (2”) jaws are
designed to be general purpose and are very
flexible. However, they are not suitable for
all woodturning tasks. Record Power offer a
full range of optional jaws suitable for a wide
variety of applications. Always ensure the
correct type of jaws are being used to maximise
user safety.
Before attaching the jaws, ensure they are clean and that
the chuck body is also clean and free from debris.
It is also advisable to apply a little lubricant to the M6 x
6 mm countersunk head hex socket screws to reduce the
risk of them becoming rusted to the chuck body if left
attached for a long time in a damp environment.
Fig 8.9
Jaw slide
numbering
8. Operation
Fig 8.11
Fig 8.10
Jaw
numbering
Fig 8.12
Open
Close
SC3 & SC4 Manual 3.7.indd 22SC3 & SC4 Manual 3.7.indd 22 22/04/2022 13:05:5322/04/2022 13:05:53
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