YCM JC12 Flashcards
What are the axis travel distances (X, Y, Z) for the JC12?
X-axis: 1,270 mm (50”), Y-axis: 660 mm (25.98”), Z-axis: 620 mm (24.4”)
How many guide blocks does the JC12 have on the X and Y axes?
Six guide blocks on the X-axis and eight on the Y-axis.
What is the maximum table load capacity of the JC12?
1,500 kg (3,300 lbs).
What is the construction material for the JC12’s bed?
Meehanite Cast Iron.
What type of guideways are used in the X, Y, and Z axes on the JC12?
High load capacity 45 mm Roller Guideways.
What benefits do the 45 mm Roller Guideways provide compared to ball-type guideways?
Greater contact area, improved rigidity, vibration damping, and longer service life.
What type of ballscrews are used on all JC12 axes?
Fixed, pre-tensioned double-nut ballscrews.
What are the pitch specifications for the ballscrews on the X, Y, and Z axes?
X-axis: 16 mm, Y and Z axes: 12 mm.
What is the diameter of the ballscrews on the JC12?
45 mm (1.77”).
What is the type of motors and encoders used in the JC12?
AC Digital Servo Motors with 1-Million Pulse Encoders.
What is the JC12’s positioning accuracy without scales?
.010 mm (.00039”) in the X, Y, and Z axes.
What is the JC12’s repeatability without scales?
.007 mm (.00027”) in the X, Y, and Z axes.
What are the optimal conditions to maintain JC12’s specified accuracy?
Temperature-controlled environment of 68°F ± 3°, with an approved foundation.
What is the recommended action if accuracy requirements are stringent?
Use foundation pads and anchoring bolts as specified by YCM guidelines.
What is the rapid traverse rate for the X and Y axes on the JC12?
36 m/min (1,417 IPM).
What is the rapid traverse rate for the Z-axis on the JC12?
30 m/min (1,181 IPM).
What is the maximum cutting feed rate for the JC12?
20 m/min (787 IPM).
What is the maximum spindle speed of the JC12?
12,000 RPM.
What spindle nose interface does the JC12 use?
Dual Contact BBT40.
What is the maximum horsepower of the JC12 spindle motor?
25 HP (18.5 kW).
What is the continuous rating for the JC12 spindle motor?
15 HP (11 kW).
What is the maximum torque rating of the JC12 spindle?
117.8 Nm (86.9 ft. lbs).
What is the spindle lubrication method on the JC12?
Grease lubrication.
What is the spindle chiller function on the JC12?
Provides thermal stability and extends spindle life by controlling spindle temperature.
At what speed should the spindle be reduced to re-lubricate bearings if run above 8,000 RPM continuously?
Reduce to 2,000-4,000 RPM for at least 10 minutes every four hours.
What are the dimensions of the work area on the JC12’s table?
1,350 x 660 mm (53.14” x 26”).
What is the maximum workpiece length the JC12 table can accommodate?
1,330 mm (52.4”).
How many T-slots are on the JC12 table, and what is their size?
Six T-slots, each 18 mm (0.71”) wide, spaced 100 mm (3.94”) apart.
What is the height of the JC12 table from the floor?
950 mm (37.40”).
What is the standard tool capacity for the JC12’s ATC?
30 tools.
What optional tool capacities are available for the JC12’s ATC?
48 or 60 tools.
What is the tool-to-tool change time for the JC12 ATC?
1.8 seconds.
What is the chip-to-chip time for the JC12 ATC?
5 seconds.
What is the maximum tool diameter with all pockets full in the JC12 ATC?
76 mm (3.0”).
What is the maximum tool diameter with adjacent pockets empty in the JC12 ATC?
125 mm (4.92”).
What coolant tank capacity does the JC12 have?
116 US Gallons.
What is the JC12’s coolant management feature to prevent chip buildup?
A ‘shower coolant system’ with up to 10 adjustable flushing nozzles.
How many chip augers does the JC12 have, and where are they located?
Five augers; four in the Y-axis (two middle and two outer) and one in the X-axis.
What is the purpose of the ATC auto door on the JC12?
Prevents chips or coolant from entering the tool magazine, reducing contamination risk.
What is the optional CTS pressure available for the JC12?
Up to 300 psi for coolant-through spindle.
What is the minimum air pressure required for the JC12?
5.5 bar (80 psi).
What is the electrical power requirement for the JC12?
220 volts, 3-phase, 60 Hz.
What is the KVA rating of the JC12 with CTS?
37 KVA.
What is the breaker size recommended for the JC12?
98 Amp.
What is the required floor space for the JC12?
4,208 x 3,484 x 3,080 mm (166” x 138” x 122”).
What is the weight of the JC12?
8,600 kg (18,960 lbs).
What are the shipping dimensions for the JC12, including front guarding?
4.20 x 3.84 x 3.08 m (166” x 138” x 122”) for the main machine and 3.72 x 2.18 x 1.25 m (146” x 86” x 49”) for front guarding.
What is the gross weight of the JC12 with front guarding included?
10,040 kg (22,135 lbs).
What structural feature enhances rigidity and performance in the JC12?
Precision hand-scraped joints to improve machine geometry and limit effects like roll, pitch, and yaw.
How does the JC12 manage chips for extended operation?
Features five augers and a shower coolant system to flush chips and manage coolant.
