oceanobob
Plastic
- Joined
- May 18, 2014
- Location
- Oceano, CA
Recently acquired a hand feed precision drill chuck. For those little detail tasks such as tiny roll pin holes or lockwire holes etc.
Chose the Jacobs with the key as it appeared to have a range from around smaller than 1/16th to 5/32. Other well known brands that are keyless had a lttle less range.
Chose a straight shank although was tempted to go with the morse shank.
Prior to purchase, I wondered just how the extension (given the telescoping style joint) would function in respect to the possibility of radial tolerance .... but I see the telescopic parts are held in rotation unison via some type of spring action that allows it to slip when opposing twisting motion is applied.
(Note: There is also a spring return axially.)
The amount of force to counter-rotate the parts (ie shank vs chuck) is notable but readily done with the hands. The literature on any of these doesn't reveal this characteristic. Not thinking this is a clutch or maybe it is? As well as perhaps a method to compensate for the radial tolerance on that telescope which somehow moves with comparatively little force - just that amount to overcome the return spring.
I will certainly try it out and report back .... but is this feature something that is part and parcel for these items?
Chose the Jacobs with the key as it appeared to have a range from around smaller than 1/16th to 5/32. Other well known brands that are keyless had a lttle less range.
Chose a straight shank although was tempted to go with the morse shank.
Prior to purchase, I wondered just how the extension (given the telescoping style joint) would function in respect to the possibility of radial tolerance .... but I see the telescopic parts are held in rotation unison via some type of spring action that allows it to slip when opposing twisting motion is applied.
(Note: There is also a spring return axially.)
The amount of force to counter-rotate the parts (ie shank vs chuck) is notable but readily done with the hands. The literature on any of these doesn't reveal this characteristic. Not thinking this is a clutch or maybe it is? As well as perhaps a method to compensate for the radial tolerance on that telescope which somehow moves with comparatively little force - just that amount to overcome the return spring.
I will certainly try it out and report back .... but is this feature something that is part and parcel for these items?