Wow! Lots of questions about our Tormach Slant Bed Lathe project after the last post. For this weeks post, I’ll address a few of most common questions.
What is the Lathe Swing?
The most popular questions had to do with various swing distances in the specification. Its clear now that most are familiar with swing distances as a diameter, so presenting these as radius measurements probably helped to create the confusion. Another popular questions seemed to be about the model name, SBL1012. Our thought was the numbers in the name would indicate X and Z travel, but there also seems to be some expectation that the numbers should instead indicate swing and Z travel. Perhaps a name change is in the future – after all, we haven’t committed to any decals at this stage.
So… with all that in mind, here are the modified SBL specs with appropriate strike-throughs:
Preliminary Specifications — Tormach
SBL1012 Slant Bed CNC Lathe
- Swing over bed –
7.5″ (radius)15.0” (diameter)
- Swing over carriage –
3.10″(radius)6.20” with turret or manual tool post, 1.88″ (radius)3.75” with gang plate
- Spindle HP – 3 horsepower continuous
- Spindle taper – D1-4 spindle with native 5C taper. Optional D1-4 three and four jaw chucks with low speed/high torque spindle motor pulley kit.
- Travel – 12” Z, 10” X
- Spindle Speed Range– 200 to 3500 RPM (5C), 200 to 2500 RPM (6” chuck). Computer controlled spindle speed and direction with regenerative braking from a 3 hp induction motor.
- Shipping weight ~1,500 lbs
- Operating temperature range 45 to 100 oF (7 to 38 oC)
- Rapid traverse – 60 IPM
- NEMA 34 stepper motors on X and Z
- Automatic or manual lubrication. Each axis has an oil distribution channel milled full length on left and right vertical and horizontal surfaces plus oil lines plumbed directly to the ball nut assemblies.
- Precision ground ball screws in the X and Z motion.
- Slide ways are a bonded low friction surface (PTFE filled acetyl), hand scraped slide ways with milled oil distribution slots.
Lathe Tooling Options?
The SBL will be able to be configured in several ways:
- Quick Change (Aloris-style) Tool Post
- 8 station turret
- Gang Plate
One of the more exciting features is that you will be able to combine different tooling options on the same
cross slide carriage, as we will be providing two different size gang plates: “full” and “2/3”. For example:
2/3 Gang + QC
Turret + 2/3 Gang
Full Gang Plate
Turret + QC post is also an option. With the tooling being highly configurable, you’ll be able to keep the lathe set up for a reoccurring job and still have space on the carriage for temporary tooling for a prototyping job.
Are we taking pre-orders?
Not at this point. But if you’re interested in getting the very latest updates on when the SBL will be offered for sale, we’ve created a signup list:
We’ll have plenty of updates leading up the release of this product, so keep reading.