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Sherline 4000/4100 - 3.5" x 8" Lathe
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INSTRUCTIONS MANUAL LATHE EXPLODED PARTS LATHE TERMINOLOGYLATHE OPERATING INSTRUCTIONS LATHE SETUP INSTRUCTIONS
| FEATURE | 4000(4100) | 4400(4410) |
| Swing over bed | 3.50" (90 mm) | 3.50" (90 mm) |
| Swing over carriage | 1.75" (45 mm) | 1.75" (45 mm) |
| Distance between centers | 8.00" (200 mm) | 17.00" (430 mm) |
| Hole through spindle | .405" (10 mm) | .405" (10 mm) |
| Spindle nose thread | 3/4"-16 T.P.I. | 3/4"-16 T.P.I . |
| Spindle nose taper | #1 Morse | #1 Morse |
| Travel of crosslide | 4.25" (110 mm) | 4.25" (110 mm) |
| Tailstock spindle taper | #0 Morse | #0 Morse. |
| Protractor graduations | 0° to 45° by 5° | 0° to 45° by 5° |
| Handwheel graduations | .001" (.01 mm) | .001" (.01 mm) |
| Length overall | 24" (610 mm) | 32.25" (820 mm) |
| Width overall | 7.5" (190 mm) | 8.75" (220 mm) |
| Height overall | 6" (150 mm) | 8" (200 mm) |
| Shipping weight | 24 lb. (10.9 kg) | 30 lb. (13.6 kg) |
| Motor | 90 volt DC with electronic speed control that accepts any incoming current from 100VAC to 240 VAC, 50 Hz or 60 Hz. | |
| Spindle speed range | 70-2800 RPM continuously variable by electronic speed control | |
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LATHE DIMENSIONS |
DIMENSION |
| Bed dovetail angle | 55.5 degrees* |
| Lathe bed to spindle centerline | 1.75" |
| Lathe table surface to spindle centerline (calculated) | .940" |
| Headstock spindle nose internal taper | #1 Morse |
| Lathe tailstock internal taper | #0 Morse |
| Headstock spindle external thread | 3/4-16 |
| Pulley groove side angle | 19° |
| Table T-slot centerline distance (lathe and mill) | 1.5" |
T-slot nominal dimensions** **Note: The T-slots are extruded into the material. Table surfaces are machined for flatness, but the slots themselves require no additional finishing processes. |
Slot width, top: .25" T width, bottom: .40" Upper slot depth: .10" T Slot depth: .10" (Total depth: .20") |
| Leadscrew thread pitch, inch (Lathe, mill X and Y axes = 1/4-20, Mill Z axis = 3/8-20) | 20 threads per inch or .050" travel per revolution (handwheels divided into 50 increments of .001") |
| Leadscrew thread pitch, metric (Lathe, mill X and Y axes = 6.3 x 1 mm, Mill Z = 10 x 1 mm) | 1 mm travel per revolution (handwheels divided into 100 increments of .01mm) |
| Leadscrew thread directions | Right-hand: Lathe crosslide, Mill X-axis Left-hand: Lathe leadscrew and tailstock screw, Mill Y-axis and Z-axis |
| *NOTE: This dimension was determined by measuring the extruded bases that were supplied when we first took over production in the USA from the former Australian manufacturer. The base and several other parts were cast to match this angle and it was not economically feasible at the time to change it to an easier-to-manufacture 60 degrees. The original 55-degree angle was determined by a reference to Machinery's Handbook, Vol. 17 as the ideal angle to cut a dovetail. When we took over production, a fixture was produced in-house to duplicate the existing angle which had changed slightly from the original 55° to an actual 55.5°. This fixture became the "standard", and every machine built since the early 1970's has been measured against this same fixture. The older brass beds and the current steel beds as well as the parts that fit them are all ground to this same angle. | |
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ALLOWABLE TOLERANCES |
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| Spindle Runout (at spindle nose), Maximum allowable (Most are within .0002-.0003") | 0.0005" |
| Spindle End Play (adjustable with preload nut), Factory Settings | with 2800 RPM Pulleys: 0.0002" with 10,000 RPM Pulleys: 0.0003" |
| Self-Centering 3-jaw and 4-jaw chuck runout | 0.003" or less |
| Leadscrew thread pitch accuracy | ±0.001" per inch of travel |
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COLLETS |
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| Sherline WW Collet body diameter | 0.312" to 0.313" |
| 8 mm WW collets (by others), body diameter | 0.314" to 0.315" |
| WW and 8 mm collet thread | .275-40 |
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HEADSTOCK BEARINGS |
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| Designation/stock number (ZZ refers to "double shielded") | 6004ZZ |
| Size of bore | 20 mm (0.7874") |
| Tolerance of bore | 0.0004" |
| Outside Diameter | 42 mm (1.6535") |
| Tolerance of OD | 0.0005" |
| Width | 12 mm (0.4724") |
| Bearings | 9 balls, 1/4" dia. |
Sherline Lathe Dimensions
The drawing below shows the key dimensions on a Sherline Model
4000 lathe. It is provided to help those who wish to make special
equipment to fit to your lathe. If you wish to download a higher
quality version of the drawing, it is also available using the link
below. Note that the longer 4400-series version of the lathe has a
taller cast base for more rigidity. It is 0.33" taller overall and
9" longer.
Motor and Speed Control
ELECTRIC MOTOR SPECIFICATIONS FROM MANUFACTURER
• Type of enclosure: Totally enclosed, non-vented
• Duty rating: Continuous--10 oz. in. at 6100 rpm, .85 amperes; Intermittent--30 oz. in. at 5500 rpm, 1.75 amperes (5 minutes on / 15 minutes off)
• Output horsepower: .06 KW (60 W) at 10 oz. in. / 6100 rpm
• AC voltage (input): Normally 115 VAC, 60 Hz, Single Phase to rectifier (Sherline electronic speed control converts any input from 100 VAC to 240 VAC, 50-60 Hz.)
• DC voltage: 90 VDC to motor (60 Hz)
• Speed in rpm: 6100 rpm continuous
• Class of insulation: Class A, 105° (C.) insulation system
• Normal full load current: .85 amperes
• Starting current: 17 amperes instantaneous starting current (<100 milliamperes). This is also stall current in True RMS
• Max current at time of changeover from lower speed to higher speed: Depends on load
• Type of motor: 3.00 inch (outer diameter) sub-fractional horsepower brush-type permanent magnet motor
• Temperature rise at ambient 50° C.: Less than or equal to 45° C.
• Motor frame size: 3 inches
• End use of motor: Drive unit for lathe or mill
MOTOR TORQUE CURVE
NOTE: Electronic circuitry built into the speed control supplies a constant 90 VDC output to the motor regardless of the input current from 100VAC to 240VAC, 50 or 60 Hz, so Sherline machines can be plugged in and used in any country in the world without a transformer as long as you have the correct wall plug converter..
USE WITH AN INVERTER: This motor and speed control can be used with an inverter that produces a sine wave. It cannot be used with an inverter that produces a square wave.
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