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CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
9. bearings
Figure G – Bearing distribution
No. Model Description Specification Quantity Accuracy
1 GB276;101 Deep-groove bearing 12x28x8 2
2 GB276;202 Deep-groove bearing 15x35x11 2
3 GB276;203 Deep-groove bearing 17x40x12 1
4 GB276;107 Deep-groove bearing 35x62x14 1
5 GB276;1000809 Deep-groove bearing 45x58x7 1
6 GB276;1000906 Deep-groove bearing 30x47x9 1 P5
7 GB276;7000105 Deep-groove bearing 25x47x8 2
8 GB276;7000107 Deep-groove bearing 35x62x9 2
9 GB276;D7000107 Deep-groove bearing 35x62x9 2 P5
10 GB276;50202 Thrust ball bearing with flat seat 15x35x11 1
11 GB277;50203 Thrust ball bearing with flat seat 17x40x12 2
12 GB297;2007106 Tapered roller bearing 30x55x17 1
13 GB301;8102 Thrust ball bearing with flat seat 15x28x9 1
14 GB301;8103 Thrust ball bearing with flat seat 17x30x9 1
15 GB301;8107 Thrust ball bearing with flat seat 35x52x12 1
10. elecTrical sysTem
Figure H – Machine wiring diagram
H1 Main power supply H5 Light H9 Reverse rotation
H2 Power switch H6 Control power H10 Direct current
power
H3 Spindle motor H7 Spindle H11 Feed clutch
H4 Pump motor H8 Clockwise rotation
10.1. general
The power supply of the machine is 400V/50Hz, 3-phase. Power supply for control circuit and lighting system is
24V, which is provided by a transformer. The control circuit is equipped with fuses for short circuit protection and
an emergency stop button for quickly shutting down the machine in case of emergencies. The transmission is
driven by a 2-speed, 3-phase AC asynchronous motor. The motor speed is selected by turning a switch.
The electrical cabinet is mounted at the back of the spindle box. The emergency stop button and other switches
are on the front left side of the spindle box (see figure A). To ensure the safety of the operator, the electrical
system must be grounded.
10.2. elecTrical circuiT
Figure I and J – Electrical circuit
1 Main motor M1 10 Limit switch SQ1
2 Cabinet B1 11 Limit switch SW3
3 Work lamp EL 12 Front control panel
4 Pump motor M2 13 Side panel of electrical cabinet
5 Wire inlet box B2 14 Contact code diagram
6 Limit switch SQ2 15 On/off chart
7 Ground PE 16 Contact code and connection, inner connection
8 Front control panel 17 Contact code and connection, outer connection
9 Button SB4, SB5, SB6
Main power switch (QS1)
The main power switch (QS1) is for controlling the power supply. It has opening for safety locking with a padlock.
17


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