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CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
9. bearings
9.1. bearing disTribuTion
See picture G.
9.2. lisT of bearings
Nr. Model Description Specification Quantity Accuracy
1 GB276;202 Deep-groove bearing 15x35x11 1
2 GB276;203 Deep-groove bearing 17x40x12 1
3 GB276;107 Deep-groove bearing 35x62x14 1
4 GB276;1000906 Deep-groove bearing 30x47x9 1 P5
5 GB276;7000105 Deep-groove bearing 25x47x8 2
6 GB276;7000107 Deep-groove bearing 35x62x9 2
7
GB276;D7000107
Deep-groove bearing 35x62x9 2 P5
8 GB276;50202 Thrust ball bearing with flat seat 15x35x11 1
9 GB277;50203 Thrust ball bearing with flat seat 17x40x12 2
10 GB297;2007106 Tapered roller bearing 30x55x17 1
11 GB301;8103 Thrust ball bearing with flat seat 17x30x9 1
12 GB301;8107 Thrust ball bearing with flat seat 35x52x12 1
10. elecTrical sysTem
Picture H – Machine wiring diagram
10.1. general
The power supply of the machine is 400V/50Hz, 3-phase.
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).
When the switch is being turned to the position “1” or “2”, the rotational speed is 960 RPM or 1450 RPM.
When the switch is in position “R”. the spindle rotates reversely and tapping may be carried out. If the switch
is in position “0”, the machine stops.
The main motor is protected by a 3VU1340 auto switch (QF1), which can protect the motor from overload.
The machine is also protected by means of electromagnetc switch ESA 1, which is used as an emergency stop.
To ensure the safety of the operator, the electrical system must be grounded.
10.2. elecTrical circuiT
Picture I
I1
Main motor M1 I5 Electromagnetic switch ESA1
I2 Indicator lamp HL1 I6 Circuit breaker QF1
I3 Light switch SX1 I7 Ground PE
I4 Change over switch QS1 I8 Wire inlet box B1
Picture J – electrical diagram
11. lisT of accessories
Nr. Description Part no. or drawing no. Specification Quantity
1 Spanner drill chuck GB6087 1-13 1
2 Connecting bar of drill chuck ZD-3C-50-201 1
3 Short sleeve for taper shank tool JB3477 3-2 1
Short sleeve for taper shank tool JB3477 3-1 1
4 Wedge for taper shank tool JB3482 Wedge 1 1
5 Hex nut GB6170 M12 4
6 Foundation bolt GB799 M12 x 300 4
7 Washer GB97.2 12 4
8 Double head wrench GB4388 22 x 24 4
9 Electric lamp bulb 24V, 25W 1
16


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