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Lathe Comparo

Here's a comparison of the Specifications for the Asian 7x, 8x, and 9x lathes and for some American 6", 9", and 12" Lathes



Values below are taken from vendor's published specifications and/or from actual measurements of unmodified units. (Grizzly, Harbor Freight, Lathemaster, Jet, Enco, Cummins, Homier, etc. Among brands of the same sizes machines are virtually identical except for paint color and/or included accessories.) All machines include manuals and parts lists (Grizzly manuals are the best.).


Prices are not listed as they vary with vendor and sale prices. Prices often include "value added" in accessories, quality of machine "out of the box", and dealer support. Sometimes prices are independent of these; shop around.


Where there is a best value parameter in the table, not purely dependent on lathe size, the value appears in red. Some may not agree with the best weight but I like cast iron for rigidity and strength!


Atlas/Craftsman 6" & 12" and South Bend 9" lathes included as references for out-of-production U.S. built smaller machines still available used and restorable. Specifications are from specific machine series; these lathes date as early as the '30's so there have been changes and improvements. These three lathes are not included in "best value" indications.

Late News! 12/31/07: I have just been given a heads-up by an interested reader of this review (Thanks, John Loosemore) who is in the market for this 8x14 or the Lathemaster version. The Harbor Freight website has changed the photo, online manual, parts list, and description of this lathe, without changing the model number. This newly documented HF lathe appears now to have only one prismatic way, at the front, with a flat way at the rear. Also the tailstock now shares the front prismatic way with the carriage. The parts diagram now shows the flat rear way. The description still says the ways are stress relieved, as before, but, as before, there is no way to tell if the ways are hardened until you get it (although I suspect they are, having been stress relieved). The big question in my mind is whether the bed is now shortened so that this is truly an 8x12 rather than an 8x14 sibling of the Lathemaster as when it was previously available. If someone knows for sure please email me (see contact page). Also questionable is what Lathemaster's version will be after the next inventory turnover.
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Parameter
7x
8x

9x

6" Atlas/Craftsman

9"
SouthBend

12"
Atlas/Craftsman

Center-Center

10", 12", 14" *

14" *

20" *

18"

17"-35"
(4 beds)

24"/36"

Swing over Cross-Slide
2-1/8"
4-1/4"

5"

3-3/8"

5-1/2"

7-3/4"

Weight
74 lbs.
242 lbs.

195 lbs.

100 lbs.

280 lbs. +

320 lbs. +

Carriage Travel
8-1/2", 10-1/2", 12-1/2"
15"#

16"

16"

14"+

22"/34"

Cross-Slide Travel
2-3/4"
4-3/4"

4-1/4"

4-3/4"

5-7/8"

6-1/2"

Compound Travel

2-3/4"

1-3/4"

1-7/8"

1-3/4"

2-1/4"

2-1/4"

Cross-Slide Screw

5/16"

1/2"

5/16"

3/8"

5/16"

1/2"

Compound Screw

5/16"

7/16"

5/16"

3/8"

5/16"

1/2"

True Inch Screws

No

Yes

Yes

Yes

Yes

Yes

Cross/Compound Dials - Marks

40 / 40

100 / 50

50 / 50

50 / 50

100 / 100

100 / 100

Threading Dial

Yes

Yes

Yes

Yes

Opt.

Yes

Lead Screw

5/8"

3/4"

9/16"

1/2"

3/4"

3/4"

Chuck Size incl.

3" 3-jaw

4" 3-jaw

4" 3-jaw
7" 4-jaw

Opt.

Opt.

Opt.

Spindle Bore

3/4"

3/4"

3/4"

17/32"

3/4"

25/32"

Chuck Mount

Plain Back Bolt-on

Plain Back Bolt-on

39x4mm or
1-1/2"x8 Thread

1"-8 or 1"-10 Thread

1-1/2"-8 Thread

1-1/2"-8 Thread

Spindle Flange

3" Dia.

4" Dia.

N/A

N/A

N/A

N/A

Spindle Bearing

Ball

Tapered Roller

Tapered Roller

Tapered Roller

Cast Iron or Bronze Sleeve

Tapered
Roller

Spindle Taper

MT3

MT3

MT3

MT2

MT3

MT3

Tailstock Taper

MT2

MT2

MT2

MT1

MT2

MT2

Tailstock Ram Dia.

7/8"

1-3/16"

1"

3/4"

1-1/8"

1-1/8"

TS Ram Travel

2-1/2"

2-1/2"

1-9/16"

1-1/4"

2-1/8"

2-3/4"

Bedway Style

Single Prism

Double Prism

Double Prism

Flat

Triple Prism

Flat

Bedway Condition

Ground

Stress Relieved
Hardened
Ground

Hardened
Ground

Ground

Hand Scraped

Ground

Bedway Width

3-1/4"

5-1/4"

4-1/2"

4-1/8"

5-15/16"

5-3/4"

Motor***/Voltage

3/4 Hp/DC

3/4 Hp / 110 VAC

3/4 Hp / 110 VAC

1/4-1/3 Hp
120 VAC
Opt.

1/4 -1/3 Hp
120 VAC
Opt.

1/2-3/4 Hp
120 VAC
Opt.

Speed Change

Electronic Variable

Timing & V-Belts
Step Pulley

Timing & V-Belts
Step Pulley

V-Belt
Step Pulley

Flat Belt
Step Pulley

V-Belt
Step Pulley

Speed Range

<150-2900 RPM

Reversible

Infinite

125-2000 RPM
Reversible
6 Speeds

130-2000 RPM
Reversible
6 speeds

54-3225 RPM
16 Speeds

40-1400+ RPM
12 Speeds

28-2072 RPM
16 Speeds

Back Gear

No, but 2 Speed Spindle

No

No

Yes

Yes

Yes

Quick Change Gear Box

No

No

Half Set**

No

Opt.

Opt./Std on late models

Tumbler Lever

Yes

No

No

Yes

Yes

Yes

Accessories Included
Varies with some vendors, check it

<3" 3-Jaw Chuck

<2 Sets Jaws

<Chuck Key

<MT3 Dead Center

<MT2 Dead Center

<Set Change Gears

<Wrench Set

<Tool Box (some vendors)

<4-way Tool Post

<4" 3-jaw Chuck

<2 Sets Jaws

<Chuck Key

<MT3 Dead Center

<MT2 Dead Center

<Intermediate Gear

<Set Change Gears

<Wrench Set

<Tool Box

<4-way Tool Post

<4" 3-jaw chuck

<2 sets jaws

<7-1/4" 4-jaw chuck

<Steady rest

<Follow rest

<MT#2 Dead center

<MT#3 Dead center

<MT#2 Live center

<4-way tool post

<Faceplate

<Extra C-type tool post

<Tool Box & Tool Kit

<Faceplate

<MT2 Dead Center

<MT1 Dead Center

<Lantern Tool Post

<Wrench Set

<Change Gear Set

<Tool Bit

<Faceplate

<2 MT2 Dead Centers

<Spindle Sleeve

<Wrenches

<Change Gear Set

<Lantern Tool Post

<Faceplate

<2 MT2 Dead Centers

<Spindle Sleeve

<Wrench Set

<Motor Electricals

.

Grizzly 7x12 incl.
Faceplate, Stdy Rest

Cummins 7x12 incl.
Faceplate, Stdy Rest,
Follow Rest, TS Chuck,
Tool Bit Set

Micro-Mark 7x14 incl.
True-inch screws

Lathemaster package also
includes:
5" 4-jaw Chuck
Faceplate

.

Spindle Indexing
System Built-in

.

Power Cross-Feed standard on L models and all newer 12"

Spindle Indexing System Built-in

10x version also

Comments

Generally considered a "kit" except Micro-Mark 7x14 is ready to work out of the box. But you can't beat the price/performance once you're up if the size is big enough. M-M says their 7x14 is a different design from others.

Large owner community with support and modifications.

Electronics board sometimes problematic.



Lathemaster has best 8x
out-of-box ready-to-go
capability. HF a close
second but weak on
accessories included.
A very solid lathe with
superior specs. in
as-received condition. Not
a lighter 9x, but actually a
much heavier & more rigid
lathe.

Every new owner rebuilds compound base first. A large following of serious machining types with loads of mods and
upgrades for DIY's. Good selection of pro vendors for base machine. Not a South Bend substitute but a good buy if you want the size.

Classic but outclassed by 7x lathes in features list. Still has the longest bed in a mini-lathe and can be easily restored to factory specs. A good sized owner support group exists and keeps these machines running. Many swear this is a better lathe than the 7x for serious use.

Mark I and later Mark II

Expensive to buy now, especially genuine SB accesories. A beautiful American-made lathe and a classic. Factory support still available and a large owner support group as well. Don't let the flat belt put you off.

Does anything & does it well. Base machine includes must have options like QCGB, tumbler, back gear. Find one and restore it; the flat ways allow simple rebuilding to factory specs. many times over. Still factory parts (expensive) available from Clausing and a good owner support group too.

Bottom Line:

Notes:

* 7x10, 7x12, 7x14 are usually as numbered (some 7x10 are reported to be 7x12); HF 8x12 and LM 8x14 are both 14"; 9x19 and 9x20 are both 20". Differences in vendors descriptions are the result of measuring with/without chuck and/or live center rather than the standard dimension using just dead centers.

Lathemaster has a new 9x30 lathe that is not included here.

** Asian 9x lathes with QCGB have half sets of ratios available; for a complete range some headstock gears must be changed as in the 7x and 8x lathes.

*** Asian lathe motors are not generally quite up to the HP their nameplate states. Not directly equivalent to U.S. built motors HP or reliability.

# 8x carriage travel with threading dial in place is 13". Removal increases travel by 2" to 15".


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