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YCM Mill Mastery |EAGLE MACHINE INC. > YCM JC12 > Flashcards

YCM JC12 Flashcards

1
Q

What are the axis travel distances (X, Y, Z) for the JC12?

A

X-axis: 1,270 mm (50”), Y-axis: 660 mm (25.98”), Z-axis: 620 mm (24.4”)

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2
Q

How many guide blocks does the JC12 have on the X and Y axes?

A

Six guide blocks on the X-axis and eight on the Y-axis.

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3
Q

What is the maximum table load capacity of the JC12?

A

1,500 kg (3,300 lbs).

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4
Q

What is the construction material for the JC12’s bed?

A

Meehanite Cast Iron.

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5
Q

What type of guideways are used in the X, Y, and Z axes on the JC12?

A

High load capacity 45 mm Roller Guideways.

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6
Q

What benefits do the 45 mm Roller Guideways provide compared to ball-type guideways?

A

Greater contact area, improved rigidity, vibration damping, and longer service life.

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7
Q

What type of ballscrews are used on all JC12 axes?

A

Fixed, pre-tensioned double-nut ballscrews.

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8
Q

What are the pitch specifications for the ballscrews on the X, Y, and Z axes?

A

X-axis: 16 mm, Y and Z axes: 12 mm.

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9
Q

What is the diameter of the ballscrews on the JC12?

A

45 mm (1.77”).

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10
Q

What is the type of motors and encoders used in the JC12?

A

AC Digital Servo Motors with 1-Million Pulse Encoders.

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11
Q

What is the JC12’s positioning accuracy without scales?

A

.010 mm (.00039”) in the X, Y, and Z axes.

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12
Q

What is the JC12’s repeatability without scales?

A

.007 mm (.00027”) in the X, Y, and Z axes.

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13
Q

What are the optimal conditions to maintain JC12’s specified accuracy?

A

Temperature-controlled environment of 68°F ± 3°, with an approved foundation.

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14
Q

What is the recommended action if accuracy requirements are stringent?

A

Use foundation pads and anchoring bolts as specified by YCM guidelines.

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15
Q

What is the rapid traverse rate for the X and Y axes on the JC12?

A

36 m/min (1,417 IPM).

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16
Q

What is the rapid traverse rate for the Z-axis on the JC12?

A

30 m/min (1,181 IPM).

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17
Q

What is the maximum cutting feed rate for the JC12?

A

20 m/min (787 IPM).

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18
Q

What is the maximum spindle speed of the JC12?

A

12,000 RPM.

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19
Q

What spindle nose interface does the JC12 use?

A

Dual Contact BBT40.

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20
Q

What is the maximum horsepower of the JC12 spindle motor?

A

25 HP (18.5 kW).

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21
Q

What is the continuous rating for the JC12 spindle motor?

A

15 HP (11 kW).

22
Q

What is the maximum torque rating of the JC12 spindle?

A

117.8 Nm (86.9 ft. lbs).

23
Q

What is the spindle lubrication method on the JC12?

A

Grease lubrication.

24
Q

What is the spindle chiller function on the JC12?

A

Provides thermal stability and extends spindle life by controlling spindle temperature.

25
Q

At what speed should the spindle be reduced to re-lubricate bearings if run above 8,000 RPM continuously?

A

Reduce to 2,000-4,000 RPM for at least 10 minutes every four hours.

26
Q

What are the dimensions of the work area on the JC12’s table?

A

1,350 x 660 mm (53.14” x 26”).

27
Q

What is the maximum workpiece length the JC12 table can accommodate?

A

1,330 mm (52.4”).

28
Q

How many T-slots are on the JC12 table, and what is their size?

A

Six T-slots, each 18 mm (0.71”) wide, spaced 100 mm (3.94”) apart.

29
Q

What is the height of the JC12 table from the floor?

A

950 mm (37.40”).

30
Q

What is the standard tool capacity for the JC12’s ATC?

A

30 tools.

31
Q

What optional tool capacities are available for the JC12’s ATC?

A

48 or 60 tools.

32
Q

What is the tool-to-tool change time for the JC12 ATC?

A

1.8 seconds.

33
Q

What is the chip-to-chip time for the JC12 ATC?

A

5 seconds.

34
Q

What is the maximum tool diameter with all pockets full in the JC12 ATC?

A

76 mm (3.0”).

35
Q

What is the maximum tool diameter with adjacent pockets empty in the JC12 ATC?

A

125 mm (4.92”).

36
Q

What coolant tank capacity does the JC12 have?

A

116 US Gallons.

37
Q

What is the JC12’s coolant management feature to prevent chip buildup?

A

A ‘shower coolant system’ with up to 10 adjustable flushing nozzles.

38
Q

How many chip augers does the JC12 have, and where are they located?

A

Five augers; four in the Y-axis (two middle and two outer) and one in the X-axis.

39
Q

What is the purpose of the ATC auto door on the JC12?

A

Prevents chips or coolant from entering the tool magazine, reducing contamination risk.

40
Q

What is the optional CTS pressure available for the JC12?

A

Up to 300 psi for coolant-through spindle.

41
Q

What is the minimum air pressure required for the JC12?

A

5.5 bar (80 psi).

42
Q

What is the electrical power requirement for the JC12?

A

220 volts, 3-phase, 60 Hz.

43
Q

What is the KVA rating of the JC12 with CTS?

A

37 KVA.

44
Q

What is the breaker size recommended for the JC12?

A

98 Amp.

45
Q

What is the required floor space for the JC12?

A

4,208 x 3,484 x 3,080 mm (166” x 138” x 122”).

46
Q

What is the weight of the JC12?

A

8,600 kg (18,960 lbs).

47
Q

What are the shipping dimensions for the JC12, including front guarding?

A

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.

48
Q

What is the gross weight of the JC12 with front guarding included?

A

10,040 kg (22,135 lbs).

49
Q

What structural feature enhances rigidity and performance in the JC12?

A

Precision hand-scraped joints to improve machine geometry and limit effects like roll, pitch, and yaw.

50
Q

How does the JC12 manage chips for extended operation?

A

Features five augers and a shower coolant system to flush chips and manage coolant.

YCM Mill Mastery |EAGLE MACHINE INC. (17 decks)

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