SHW UF-2 Specifications

(s/n 2675 at CircuitousRoot)

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These are the specifications for the SHW Universal Milling Machine model UF-2, s/n 2675, at CircuitousRoot. The incomplete English-language manual that I acquired with the machine lacks its Specifications pages (and contains certain inconsistencies), so these are re-derived from various sources (most importantly from the machine itself).

Although the UF-2 is certainly metric in its underlying construction (having been built in Germany in 1963), this particular machine appears to be native-inch-system in all of its leadscrews.

In the event that you, too, have a UF-2, please remember that there were differences between individual machines. These data may not be accurate for your machine.


1. General Information

Manufacturer: Schwäbische Hüttenwerke GmbH (now SHW Werkzeugmaschinen GmbH )
Made in: Waseralfingen, West Germany (now Aalen, Germany)
Names: Universal-Fräsmaschine UF-2 (Universal Milling Machine UF-2)
Universal Toolroom Milling Machine
Omniplex Milling Machine
Serial Number: 2675
Date made: 1963

Sources: The serial number, date of manufacture, and 1963 name of the company are from the nameplate on the machine (though it says only "Germany," not West Germany). The names are from the English-language manual and from the German-language technical drawings reproduced in this manual. The translation of Fräsmaschine is by Google Translate. The history of Waseralfingen/Aalen is from Wikipedia.

2. Overall Dimensions

(For the dimensions useful for rigging and moving the machine (which are sometimes composite dimensions or dimensions with the machine in a particular configuration) see the section on "Dimensions Useful for Rigging," below. For composite dimensions useful for erecting the machine, see "Floor Plan," below.)

Length Overall (min) [TO MEASURE]
Length Overall (max) [TO MEASURE]
Width Overall (min) [TO MEASURE]
Max Width Left from CL [TO MEASURE]
Max Width Right from CL [TO MEASURE]
With Overall (max) [TO MEASURE]
Height Overall (to top of highest handle) [TO MEASURE]
Base Length [TO MEASURE]
Base Width [TO MEASURE]

Sources: All dimensions as measured from the machine (the dimensions in the manual are insufficient and contradictory).

3. Machine Movements

(There are quite a lot of them.)

Note: The manual uses the terms "longitudinal" and "transverse" in a way which, while sensible given the unusual operator's position of this machine, is potentially confusing. I'll avoid them and instead use these terms:

Knee X (left/right) travel: 29"
Knee X (left/right) Handwheel graduations: 1/1000" (0.001")
Knee (Column) Z (vertical) travel: 18"
Knee (Column) Z (vertical) Handwheel graduations: 1/5000" (0.00,2")
Swivelling Base (vertical plane in X Axis) rotation: 30° - 0° - 30°
Swivelling Support (vertical plane in Y Axis) rotation: 0° - 30°
Table (Saddle) Y (fore/aft) travel: 12"
Table X (left/right) travel: 16" (independent of Knee)
Table X (left/right) Removable Crank graduations: 1/1000" (0.001")
Table rotation (swivel in horizontal plane): 30° - 0° - 30°
Overall X Axis Movement (Knee + Table): 29" + 16" = 45"
[Horizontal] Spindle Head Stock (the "ram") Y (fore/aft): 20"
[Horizontal] Spindle Head Stock Handwheel graduations: 1/1000" (0.001")
Top Unit positions: A: Vertical Milling Head
B: Vertical Slotter
C: Overarm Support
D: Clear
Vertical Milling Head rotation: 360°
Vertical Milling Spindle travel (Z Axis): 4"
Vertical Slotter rotation 90° - 0° - 90°
Vertical Slotter travel (Z Axis): 4"

Note: The rotation of the Swivelling Support (vertical plane in Y axis) requires the Saddle (Table) to be moved forward to the [TO MEASURE] position or beyond.

Note: There are no graduations for the removable cranks used for the Swivelling Base and Swivelling Support; you read the amount of rotation from a scale on the machine. There is no crank for rotating the Table horizontally; you move it by hand and read the rotational position from a scale.

Note: The Vertical Milling Head has a handwheel-fed downfeed, but does not have a drill-press-like "quill" lever feed.

Note: The Vertical Slotter travel is given here as stated in the English-language manual. The scale on the machine also reads from 0 to 4, but its overall length is closer to 2 inches. I presume that this is due to the geometry of its crank, and that the real travel is 4 inches, but I have not yet operated the Vertical Slotter to verify this.

Power Feeds are present on these Axes only:

Power feeds are NOT present for these Axes/Motions:

Sources: All dimensions as measured from scales on the machine. As far as I can tell, this machine has been equipped as a native-inch-system machine.

4. Table and T-Slot Dimensions

Note: The table consists of a central area with T-Slots surrounded by a channel for coolant, with a rim around the outside. On the left and right the rim is lower than the T-Slot level. But in the front and back it is raised flush with the T-Slot level so that it can provide additional support (but not clamping) for a workpiece.

External Table Width (X, left/right): 55"
External Table Depth (Y, fore/aft): 18 7/8 "
T-Slot Area Table Width (X, left/right): 50 3/8 "
T-Slot Area Table Depth (Y, fore/aft): 15 1/4 "
Number of T-Slots: 6
Width of T-Slot (top) 0.62"
Width of T-Slot (bottom) 1.04"
Depth of T-Slot (total) 1.07"
Depth of T-Slot (top flange) 0.65"
Depth of T-Slot (bottom space) 0.42"
Table Width Between T-Slots (5 full lands) 1.85"
Table Width for Rear Land (aft of back T-Slot) 1.51
Table Width for Front Land (foreward of front T-Slot) 0.77

Sources: All dimensions as measured from the machine.

5. Spindle Noses

This particular machine is equipped to use what is popularly called NMTB 40 tooling in the Vertical Milling Spindle and NMTB 50 tooling in the Horizontal Milling Spindle. This spindle nose standard is currently defined in ASME B5.18 (formerly ANSI, formerly ASA).

This is probably equivalent to "ISA 40" and "ISA 50" tooling, as specified in at least one English-language version of the manual. See the CircuitousRoot Notebook on NMTB Spindle Noses for a further discussion of the history of this standard and the many names of the "NMTB" spindle nose standard.

This spindle nose standard was generally quite common on American manual milling machines. Tool shanks (tool holders) for it are still readily available. It is being superseded by "CAT" series spindle noses for CNC machines. These are now less expensive. I think, but have not yet verified, that it might be possible to use CAT tool holders in my machine with only a minor modification of the drawbar.

Note that the English-language version of the manual that came with this machine, while missing its Specifications pages, indicates that the machine takes Morse Taper tooling. So some machines must have been so equipped; mine is not.

If you're searching the web for information about UF-2 milling machines, note also that a 2004 posting of this very machine for sale said that it took "NST 40" and "NST 50" tooling. This is an error; there is no such standard.

6. Machine Capacities

(See also Table Dimensions, above.)

Vertical Spindle to Table (min) [TO MEASURE]
Vertical Spindle to Table (max) [TO MEASURE]
Horizontal Spindle Centerline to Table (min) [TO MEASURE]
Horizontal Spindle Centerline to Table (max) [TO MEASURE]
Horizontal Spindle to Overarm Support (max) [TO MEASURE]
Workpiece Weight Maximum, Table Full aft: 2,200 pounds
Workpiece Weight Maximum, Table Full forward: 1,300 pounds

Sources: Dimensions measured from machine. Workpiece weights as given in English-language version of the manual.

Note: Measurements in-line with a spindle are taken from Gage Line of the spindle nose. They do not take into account the spindle nose driving keys or the size of any tool or tool holder.

7. Speeds and Feeds

The machine has a total of 18 speeds over two ranges. The high range is 10x the low range (with one apparent exception for 35/355). Both spindles have the same speeds. The speed of the Vertical Slotting Head (in strokes per minute) is 2/3 that of the numerical setting of the selected spindle speed (in revolutions per minute).

Spindle Speeds (in rpm):

Low Range: 35 45 56 71 90 112 140 180 224
High Range: 355 450 560 710 900 1120 1400 1800 2240

The machine has nine power feed settings, each of which produces a particular feed rate on each of the four possible power feeds.

Power Feeds (in inches per minute):

Spindle Head Stock: 0.38 0.545 0.8 1.26 1.89 2.62 3.74 5.37 7.95
Knee Slide, Vertical: 0.325 0.436 0.644 1.01 1.515 2.115 3.0 4.32 6.37
Knee Slide, Horizontal: 0.586 0.84 1.236 1.94 2.91 4.06 5.76 8.275 12.25
Milling Table: 0.565 0.81 1.192 1.875 2.82 3.85 5.56 8.00 11.82

Sources: Spindle speeds from the dials on the machine. Vertical Slotter Head strokes from the English-language manual. Feeds from the information plate on the machine.

8. Dimensions Useful for Rigging

See also the Notebook of "Rigging Notes" for this machine.

Weight: 7,000 pounds
Hoisting Bar Hole Diameter: [TO MEASURE]
Base "Pocket" Height and Clear Width: [TO MEASURE]

The minimum width of the mill with all handwheels in place is: [MEASURE]

The minimum width of the mill with the Knee handwheel removed is : [MEASURE]

The ordinary length of the mill with all handwheels in place and the Horizontal Spindle Head at its zero position is: [MEASURE]

The minimum length of the mill with the Table handwheel removed and the Horizontal Spindle Head moved forward (to move the Main Motor over the Column) is: [MEASURE]

(Note that moving the Horizontal Spindle Head in this way is unsuitable for the use of the factory-specified hoisting method, and in addition will move the longitudinal Center of Gravity even further forward.)

The minimum height of the mill, with the Vertical Milling Head swung flat, is: [MEASURE]

(Note: The highest point on the machine at minimum height configuration is the ball of the handle at the top of the Top Unit. This handle is not easily removable.)

There are four cut-away places in the Base of the machine into which one can get the tip of a Rigger's Nose Bar. (These are available from Eastern Rigging Supply.) These four places have a height of [MEASURE] and a clear width at their top of [MEASURE].

The diameter of each of the holes for putting a bar through the Column near the rear of the machine (for hoisting) is: [MEASURE] The Column is [MEASURE] wide at this point. [TO DO: Photograph the holes, outside and inside]

The weight of the mill, as stated in the English-language manual, is 7,000 pounds. (This figure appears on Sheet 16, "Hoisting Instructions," which is reproduced earlier in this Notebook.) I believe it.

Here is a diagram of the positions of the vertical holes through the Base. The back holes are [MEASURE DIAMETER] and the full depth of the base (206 mm, or about 8 1/8 inches). The front holes are [COMPLEX; MEASURE AND DESCRIBE].

[TO DO: measure and draw it]

Sources: Weight from Sheet 16 of the English-language version of the manual. Hoisting bar hole diameter as measured on the machine. The features I'm calling "base pockets" are the four cut-away sections in the base, at ground level, where you can get a Rigger's Nose Bar in to raise the machine if it is sitting flush on the ground. Their measurements are from the machine itself.

Note that the fore/aft center of gravity of the machine is significantly further foreward (toward the table) than one might intuitively expect. The English-language manual (p. 5 & Sheet 16) observes that it is "approximately above the column ways." This was confirmed by practice when moving this machine. The exact center of gravity may, however, vary with the configuration of the machine and should always be determined experimentally before moving the machine.

9. Floor Plan


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