What to do if my Jesco PRINCE has wrong rotation?
- JJohnathan FischerSep 12, 2025
If your Jesco Lathe has the wrong rotation, it's likely due to the wrong sequence of phases. Reverse any two leads connecting for the motor to correct this.
What to do if my Jesco PRINCE has wrong rotation?
If your Jesco Lathe has the wrong rotation, it's likely due to the wrong sequence of phases. Reverse any two leads connecting for the motor to correct this.
What to do if my Jesco PRINCE motor is overheating?
If your Jesco Lathe motor is overheating, consider these potential causes: Excess belt tension (adjust the belt tension). A cooling fan failure (check the fan for proper operation). A badly worn bearing (replace the bearing). Short grease in bearing (replenish grease). Overload (reduce cutting speed or feed rate). Incorrect speed range running continuously (change the speed range and adjust the speed select knob).
Why is my Jesco PRINCE leaking oil?
Oil leakage in your Jesco Lathe could be due to several reasons: The plug of the drain isn't tight (reseal and tighten it). The case is cracking (it needs to be repaired by special welding). There's leakage from the overflow (tighten the cover screws). The packing or gasket is damaged (replace the packing or gasket). Or there's leakage from the overflow on the spindle bearing housing (reduce oil flow to the bearing or enlarge oil return flow).
Why is my Jesco Lathe coolant pump failing?
A failing coolant pump on your Jesco Lathe could be due to several reasons: Wrong rotation (reverse any two leads to the pump). Not enough coolant or a return filter obstructed (replenish coolant or clean the return filter in the chip tray). Overload relay off (reset the overload relay).
What to do if my Jesco PRINCE Lathe fails to start?
If your Jesco Lathe fails to start, check the following: The circuit might not be complete (check the switch, leads, fuse, etc., and replace or reconnect properly). The power may be off (check the cable connection). The overload relay may be off (reset the overload relay).
Why is my Jesco Lathe motor noisy and vibrating?
If your Jesco Lathe's motor is noisy and vibrating, consider the following potential causes: The motor is loosely mounted (tighten the mounting bolts). The mounting frame is strained (stiffen the mounting place or add shims under the foot pad). The motor shaft is bent or sprung (straighten or replace it). The foundation is inadequate or the motor feet are uneven (shim the motor feet for equal mounting).
Why is my Jesco PRINCE making excess noise or vibration?
Excess noise or vibration in your Jesco Lathe can stem from several issues. It could be due to a badly worn bearing (requiring replacement), lost leveling (necessitating a recheck and tightening), or worn V-belts (which should be replaced). Other potential causes include loose belt tension (adjust it), a worn gear (replace it), a bent or sprung shaft (straighten or replace it), or a loosened pulley (tighten the set screw). Also, check if the workpiece clamp is loose (tighten it), the bearing thrust is too loose (tighten the end thrust nut), the headstock isn't tight on the bed (tighten the fixed screws), there's excess clearance between the carriage and bed (adjust the gib and tighten the back clamp), or there's excess clearance in the cross or compound slide (adjust the taper gib). Cuttin...
What causes a fail lubricant on slide way of my Jesco PRINCE Lathe?
Failure of lubricant on the slide way of your Jesco Lathe is caused by oilers obstructed by dirty or damaged. Replace the oilers.
What causes misalignment of chuck with spindle nose on my Jesco PRINCE Lathe?
Misalignment of the chuck with the spindle nose on your Jesco Lathe is caused by incorrect position of cam. Adjust the cam and lock it in proper position.
What to do if my Jesco Lathe is showing failure on power feeding?
If you're experiencing failure on power feeding with your Jesco Lathe, here are a few things to check: The half-nut lever not disengage at all (disengage half-nut lever exactly). Feeds change lever incorrect positioning (push-in or pull-out the lever exactly). The safety latch and interlock pin failure (replace the safety latch or interlock pin).
Details necessary qualifications and training for operators.
Guidelines for handling hazardous substances and environmental safety.
Defines the intended applications and prohibited uses of the lathe.
Specifies ambient temperature, humidity, altitude, and atmospheric conditions for operation.
Outlines voltage, frequency, harmonic distortion, and interruption tolerances for the power supply.
Lists detailed technical data including dimensions, capacities, and performance metrics.
Details the items included with the lathe as standard.
Lists additional items available for purchase with the lathe.
Provides a visual representation with key dimensions for conventional lathes.
Details specifications related to tool shanks, tailstock drills, and maximum weights.
Provides safety notes and weight information for lifting the machine before unpacking.
Step-by-step instructions for safely opening and removing the machine from its shipping case.
Details the capacity of forklifts required for safe lifting and transport of the machine.
Covers pre-lift checks, equipment requirements, and safety precautions.
Instructions on how to lift the lathe using hoists/cranes, emphasizing slow and steady movement.
Highlights dangers of improper lifting by non-certified personnel.
Lists essential safety rules and guidelines for operating the lathe.
Provides the equivalent A-weighted sound pressure level and notes on exposure evaluation.
Details hazards associated with using emery cloth and necessary precautions.
Describes recommended methods and warnings for using emery cloth on rotating components.
Introduces the general operation of the lathe with a diagram and legend.
Illustrates the required foundation layout and dimensions for machine placement.
Shows the diagram and details for anchor bolt installation for securing the machine.
Illustrates how to connect the lathe to an extraction system.
Identifies and illustrates the danger areas and moving parts on the lathe.
Shows the location and function of safety devices like power switch and door interlocks.
Discusses the importance and design of chuck and chip guards for risk reduction.
Indicates the placement and meaning of various warning labels and signs on the machine.
Provides instructions for cleaning, leveling, and preparing the lathe for use.
Details the procedures and precautions for connecting the machine to the electrical supply.
Explains the importance of lubrication and outlines checks for headstock, gearbox, and apron.
Instructions on how to properly mount chucks and faceplates onto the spindle nose.
Provides guidelines and dimensions for designing and using top jaws for workholding.
Identifies the main control levers and their functions on the lathe.
Explains the operation of buttons, knobs, and indicators on the control panel.
Details how to select spindle speeds and control rotation for standard models.
Explains the function and operation of the footbrake for stopping the spindle.
Describes how to adjust spindle speeds using the varispeed system.
Explains the footbrake function for varispeed models.
Details the mechanism and charts for setting feeds and threads using the quick change gearbox.
Provides charts for setting metric and universal gearboxes for threads and feeds.
Explains the role of the carriage in supporting the cutting tool and moving it.
Details how to engage and operate longitudinal and cross power feeds.
Explains the function and usage of the threading dial for accurate thread cutting.
Describes how to change tools using the four-way toolpost.
Covers the function, locking, and adjustment of the tailstock.
Explains the setup and use of the taper attachment for cutting tapers.
Instructions for aligning the main spindle centerline with the bedway.
Details how to adjust spindle bearings for proper tightness.
Explains how to adjust set springs for smooth knob operation.
Steps for replacing or replenishing camlock components.
How to correct loose status of the leadscrew.
Procedures for adjusting or replacing worn half-nuts.
How to adjust clearance for the hand wheel on the apron.
Procedures for adjusting backlash in the cross slide screw.
How to adjust the carriage back clamp for precise leveling.
Adjusting the cross slide and compound slide for smooth movement.
How to align the centerline of the tailstock and main spindle.
Adjusting the tailstock clamp handle lever for stability.
Instructions for checking and replenishing the coolant level.
Daily checks before and after starting the motor, and during operation.
Weekly checks for lubricating system, coolant system, and transmission.
Monthly checks for cleaning, electrical system, and vibration/leveling.
Detailed inspections and checks to be performed every six months.
Annual inspections including repainting and checking exposed parts.
Probable causes and remedies for headstock bearing overheating.
Common causes and solutions for oil leakage problems.
Identifies causes and solutions for excess noise or vibration from the machine.
Addresses problems like bending during long workpiece cutting and product accuracy failures.
Solutions for uneasy lever operation, chuck misalignment, and threading difficulties.
Troubleshooting for tailstock clamp instability, foot brake, power feeding, and slide way lubrication.
Diagnoses problems related to starting the machine and incorrect spindle speed.
Covers motor noise, vibration, overheating, and coolant pump failures.
Troubleshooting for inverter alarms, circuit issues, and wrong rotation.
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