Call us at: 800-528-4371
1000 30th Street
Monroe Wisc. 53566
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Speed Lathe Models

Multi Purpose
Model 3CPL
Model 30DC
Model 30AC
Model 60DC

Automotive
Model 30Auto
Model 60Auto
Industries Served:
  • Aircraft Engine
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  • Hydraulic Couplings
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  • Munitions
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  • Tool Manufacturing
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  • And many others world-wide.

CROZIER SPEED LATHE - Model 30AC


2 HP, 0-3000 RPM, Variable Speed, Dynamic Brake

For those who need extra power for sanding or building a special purpose machine, we offer the Crozier Model 30AC.

Standard Features

  • 2 HP
  • Air-Collet Closure
  • 0-3000 RPM, Variable Speed
  • Dynamic Brake
  • Cast Housing
  • 5C Collets
  • 1 or 3 Phase / 240 Volts

Contact Crozier For Price Quote

SPEED LATHE - Model 3CPL

Description:

For those who need extra power for sanding or building a special purpose machine, we offer the Crozier Model 30AC. This is our standard head unit powered by a 2 horsepower motor. To supply power to the motor, we utilize a solid state inverter. This inverter provides the speed lathe with variable speed range of 0 to 3000 RPM. In addition, the inverter provides both soft start capabilities and dynamic braking. Standard input is 240 volt, and can be either single phase or three phase. Standard features include the Crozier designed air collet closure.

Specifications:

Collet

Collet Type
5C
Collet Capacity
1.062 inches
Collet Closure Operation
Air

Spindle

Housing Construction
Cast
Bearing Type
Ball
Front Bearing
Double Row
Rear Bearing
Single Row
Rear Lubrication
Sealed
Standard Spindle Speed
1800 RPM
Maximum Spindle Speed
3600 RPM
Spindle through Hole
1.125 inches
Spindle Brake
Dynamic

Drive System

Motion
Multi-groove V Belt
Motor Speed
1800 RPM
Motor Horsepower
2 HP
Motor Phase
Three

General Notes

Electrical
Three Phase/240Volts/6Amps
Base Width
20 inches
Base Depth
17 inches
Machine Height
16 inches
Machine Weight
130 lbs.
Shipping Weight
155 lbs.

Operation Manual:

UNPACKING
The Crozier Model 30AC Speed Lathe is attached to a wooden pallet. The Speed Lathe is attached to the bottom of the container with four carriage bolts. Remove the bolts from the mounting holes. The Speed Lathe is ready for installation. Check the box for all parts. If any damage is noted call the freight company immediately. The freight company is responsible for the safe delivery of the machine and if immediate notification of damage is not reported, you might not be able to file a claim for damages.

INSTALLATION
The Crozier Model 30AC Speed Lathe must be secured to a suitable stand at all times.

LUBRICATION
The Crozier Model 30AC Speed Lathe is designed to operate with sealed bearings. No provision has been made for introducing grease into the bearings. Should it become necessary to change bearings only sealed bearings of electric motor quality C/3 fit with seals or shields on both sides should be used. No bearing spacers are required.

POWER CONNECTION
The Crozier Model 30AC Speed Lathe input requirement is 240 Volts, three-phase power. Motor rotation is counter-clockwise, looking directly at the shaft. A qualified electrician is required to install the electrical connection. The machine must have a power disconnect placed near the machine. The electrician must run the wire through conduit from the disconnect to the control box. The incoming power is hooked up to the #1, #2, and #3 terminals.Ground is terminal #4.  Make sure all connections are tight before energizing the motor.

AIR REQUIREMENTS
The Crozier Model 30AC Speed Lathe requires 90 PSI dry air for proper operation. The air operates the collet closure. Never operate the Speed Lathe without the air connection hooked up. Under no circumstance should the machine be run with a part in the collet and the air off.

AIR-COLLET CLOSURE
Wait for the Speed Lathe to come to a complete stop before attempting to open the collet closure. DO NOT open the collet closure with the Speed Lathe running. Make sure the part is secured in the collet and the collet is closed under air pressure before turning the machine on. DO NOT place long parts that can whip or extremely heavy parts that are not in balance or straight.

The foot pedal activates the air closure, in the text, the valve isfoot pedal referred to as a foot valve. The foot pedal is normally hooked up when the machine is received. if not, it is important to make the right connection. The collet is drawn into the spindle with the foot pedal untouched. When you push down on the foot pedal, the collet is pushed off the taper and the collet opens. If the operation is backwards reverse the two (2) air lines going into the back of the machine. To load the collet, find the collet key in the spindle nose. Check the collet threads and drive slot on the collet. Make sure the collet threads and drive slot are clean. Insert the collet in the spindle nose lining up the key. Press the collet firmly against the draw tube. Turn the draw tube hand wheel clockwise drawing th collet into the nose. When the collet is nearly in the spindle place the part in the collet. Continue turning the hand wheel until the part is tight in the collet. When the part is tight in the collet push down on the pedal at the same time turn the hand wheel two (2) detents clockwise. Release the pedal. The part should now be tight. If not push down again and repeat the procedure turning one (1) detent each time.

COLLETS
If the collet sticks or is hard to open, polish the collet surface that slides into the precision hole. Only high quality collets should be used. For best results, we recommend, Hardinge®: 5C collets. Hardinge® Collets are available from factory outlets in major cities or from reputable tool houses. If the machine is used in an abrasive environment the spindle hole should be cleaned when you change collets.

The threads on the draw tube can wear from extended use or using worn or undersized collets. If this occurs the collet will not lock into the spindle and the work piece will not be held. The draw tube must be replaced if this happens. Always check the collet threads for damage or foreign material. In an abrasive environment clean the collet threads at regular intervals. If the collet keeps working itself loose check the rotation. If the rotation is correct make sure the drive key has not sheared off. If this happens replacement of the key is necessary.

There should be a minimum of .075 inches in the opening and closing movement of the collet. The standard 5C collet can accept a work piece variance of .005 inches. Any larger variance will cause the collet to distort and not hold the part properly. Do not under any circumstance force the collet to hold a undersized part. Serious damage can result from such actions.

BRAKE
The Speed Lathe is equipped with dynamic braking. It is automatically activated when the motor is shut off. After the motor stops, the spindle will turn freely. There is no adjustment required on the brake. The motor can be cycled on and off continually without damage to the unit.

INVERTER
The Model 30AC Speed Lathe is a variable speed unit equipped with a solid state frequency inverter. Alternating Current (AC), 60 Hz voltage is converted to Direct Current (DC). This DC voltage is recontructed to a variable (0-120 Hz) voltage. This allows the spindle speed to operate from 0-3600 RPM. Additionally, the advantage of the inverter is the ability to ramp the motor up to speed without a voltage spike associate with normal motor operation. It also stops the motor by turning the motor into a generator and dissipating the heat through a resistor pack. There is a special motor noise associated with inverters and can cause concern for those not used to it. A whine or gearshift noise is normal as is a pulsing of the spindle at low RPM (less than 100 RPM). The speed pot on the control box is for varying the spindle speed. The start and stop buttons are located on the same box.

GENERAL NOTES
As with all equipment proper care should be taken. Safety glasses must be worn at all times while operating the Speed Lathe. It is the responsibility of the end user to determine the suitability of the Speed Lathe in their application.

This machine is a precision machine tool. The components used in its manufacture are of the highest quality and the machined parts are held to very exact tolerances. If you expect the machine tool to last, you must take proper care of it.

The Crozier Model 30AC Speed Lathe can be cycled on and off as fast as you can do the work.

Parts List:


Part Number
Description
Quantity Per Unit
Price
A-203
Solenoid
1
$81.00
A-400
O Ring
1
$12.00
A-402
O Ring
1
$12.00
A-404
O Ring
2
$12.00
A-406
O Ring
1
$12.00
B-100
Bearing-6209ZZ
2
$43.00
B-102
Bearing-5210ZZ
1
$81.00
E-100
Control Box
1
$125.00
E-300
Motor Contactor
2
$94.00
E-509
Knob Kit
1
$19.00
E-510
Speed Pot
1
$19.00
E-600
Start Button
1
$31.00
E-601
Stop Button
1
$44.00
E-606
Contact Block N/O
1
$19.00
E-607
Contact Block N/C
1
$19.00
E-610
Label-Start
1
$5.00
E-611
Label-Stop
1
$5.00
E-710
Inverter
1
$156.00
F-100
Set Screw 1/4-20 x 1/4
6
$3.00
F-107
Set Screw 5/16-18 x3/8
2
$3.00
F-204
Allen Cap 5/16-18 x 1/2
8
$3.00
F-209
Allen Cap 3/8-16 x 1/2
4
$3.00
F-301
Allen Flat 8/32 x 3/4
8
$3.00
F-400
Allen Hex 1/4-20 x 1/2
8
$3.00
M-106
Motor
1
$510.00
N-100
Front Nut
1
$19.00
PL4-01
Draw Tube
1
$122.00
PL4-02
Hand Wheel
1
$19.00
PL4-03
Draw Tube Adaptor
1
$270.00
PL4-05
Center Cam
1
$181.00
PL4-06
Outer Cam
1
$119.00
PL4-07
Operating Housing
1
$340.00
PL4-08
Inner Cam
1
$119.00
PL4-09
Set Screw
2
$3.00
PL4-10
Spring
2
$3.00
PL4-11
Steel Ball
2
$3.00
PL4-12
Spindle Housing
1
$925.00
PL4-13
Spindle Pulley
1
$94.00
PL4-19
Collet Key
1
$49.25
PL4-20
Collet Insert
1
$131.00
PL4-21
Woodruff Key
1
$3.00
PL4-24
Snap Ring
1
$8.00
PL4-26
Spindle
1
$450.00
PL4-28
Detent Plate
1
$94.00
PL4-32
Snap Ring
1
$8.00
PL4-34
Spiral Lock Ring
1
$7.00
PL4-40
Base
1
$220.00
PL4-45A
Drive Belt
1
$31.00
PL4-46
Motor Pulley
1
$94.00
PL4-50
Felt Ring
1
$8.00
PL4-53
Front Seal
1
$31.00
PL4-54
Front Bearing Cap
1
$156.00
PL4-69
Motor Mount
1
$168.00
PL4-70
Belt Guard
1
$94.00