jpeach1
Aluminum
- Joined
- Jun 14, 2009
- Location
- Hampstead MD
Asking this question specific to this model lathe. The topic of non-MT Harrison lathe spindle tapers has been well covered in this forum, but was hoping for a definitive answer to this lathe model specifically. Knowing the taper specs straight away will help if I end up making one.
1. What is the taper of the spindle of the Harrison M390 (1994 vintage)? I’ve seen references to a Jarno or Reed taper; if someone has definitively established please share.
2. The lathe apparently came with, from the factory that is, a spindle bushing that external taper matched the non-MT spindle taper, internal to a 4MT. The manual refers to the spindle taper as 4MT in bush. Generally in bush is a good thing , but not so much here. Is there any commercially available bushings available? I have a call into the Harrison support for the part number and availability (I’m preparing myself to make / grind one).
1. What is the taper of the spindle of the Harrison M390 (1994 vintage)? I’ve seen references to a Jarno or Reed taper; if someone has definitively established please share.
2. The lathe apparently came with, from the factory that is, a spindle bushing that external taper matched the non-MT spindle taper, internal to a 4MT. The manual refers to the spindle taper as 4MT in bush. Generally in bush is a good thing , but not so much here. Is there any commercially available bushings available? I have a call into the Harrison support for the part number and availability (I’m preparing myself to make / grind one).