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  2. AC Spindle Motor Beta i

AC Spindle Motor Beta i Descriptions Page 21

Descriptions
B-65312EN/01 MOTOR TYPES AND USAGE 2.NOTES ON INSTALLATION
- 7 -
6 Dynamic balance
During high-speed operation, a small imbalance may cause a
large vibration, resulting in an unusual sound, premature bearing
damage, or some other abnormality.
Therefore, reduce the amount of the imbalance with the dynamic
balance of the other rotation shafts, as well as the gear and
pulley mounted on the output shaft of the motor, as much as
possible.
- Balance correction
With the βi series, a shaft with no key is used as standard to
facilitate the balance correction of a pulley, gear, and
coupling attached to the shaft. Use a completely symmetric
pulley, gear, or coupling, and use a backlash-less tightening
part such as a SPANN ELEMENTE to secure a pulley, gear,
or coupling to the shaft. When attaching a pulley to a shaft,
for example, adjust the periphery vibration to within 20 µm.
This basically eliminates the need for balance correction.
To further reduce the vibration level, make a field balance
correction, for example, by tightening a screw into the
tapped hole for balance correction provided on a
component such as a pulley.
NOTE
When a shaft with a key is required, contact your
FANUC sales representative.
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Contents Summary of AC Spindle Motor Beta i Descriptions

  • Page 1FANUC AC SPINDLE MOTOR #* series DESCRIPTIONS B-65312EN/01
  • Page 2Ȧ No part of this manual may be reproduced in any form. Ȧ All specifications and designs are subject to change without notice. In this manual we have tried as much as possible to describe all the various matters. However, we cannot describe all the matters which must not be done, or which cannot be
  • Page 3B-65312EN/01 SAFETY PRECAUTIONS SAFETY PRECAUTIONS This "Safety Precautions" section describes the precautions which must be observed to ensure safety when using FANUC spindle motors. Users of any spindle motor model are requested to read this manual carefully before using the spindle motor. The use
  • Page 4SAFETY PRECAUTIONS B-65312EN/01 1.1 DEFINITION OF WARNING, CAUTION, AND NOTE This manual includes safety precautions for protecting the user and preventing damage to the machine. Precautions are classified into Warning and Caution according to their bearing on safety. Also, supplementary information
  • Page 5B-65312EN/01 SAFETY PRECAUTIONS 1.2 WARNING WARNING - Be safely dressed when handling a motor. Wear safety shoes or gloves when handling a motor as you may get hurt on any edge or protrusion on it or electric shocks. - Use a crane or lift to move a motor from one place to another. A motor is heavy.
  • Page 6SAFETY PRECAUTIONS B-65312EN/01 WARNING - Do not bring any dangerous stuff near a motor. Motors are connected to a power line, and may get hot. If a flammable is placed near a motor, it may be ignited, catch fire, or explode. - Do not get close to a rotary section of a motor when it is rotating. You
  • Page 7B-65312EN/01 SAFETY PRECAUTIONS 1.3 CAUTION CAUTION - Do not touch a motor when it is running or immediately after it stops. A motor may get hot when it is running. Do not touch the motor before it gets cool enough. Otherwise, you may get burned. - Be careful not get your hair or cloths caught in a
  • Page 8SAFETY PRECAUTIONS B-65312EN/01 CAUTION - Be sure to attach a key to a motor with a keyed shaft. If a motor with a keyed shaft runs with no key attached, it may impair torque transmission or cause imbalance, resulting in the motor being broken.With the βi series, a shaft with no key is used as stand
  • Page 9B-65312EN/01 SAFETY PRECAUTIONS 1.4 NOTE NOTE - Do not step or sit on a motor. If you step or sit on a motor, it may get deformed or broken. Do not put a motor on another unless they are in packages. - When storing a motor, put it in a dry (non-condensing) place at room temperature (0 to 40 °C). If
  • Page 10SAFETY PRECAUTIONS B-65312EN/01 NOTE - Do not apply a commercial power source voltage directly to a motor. Applying a commercial power source voltage directly to a motor may result in its windings being burned. Be sure to use a specified amplifier for supplying voltage to the motor. - For a motor wi
  • Page 11B-65312EN/01 PREFACE PREFACE The models covered by this manual, and their abbreviations are: Series Model βi series β3/10000i, β6/10000i, β8/8000i, β12/7000i p-1
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  • Page 13B-65312EN/01 TABLE OF CONTENTS TABLE OF CONTENTS SAFETY PRECAUTIONS .......................................................................... s-1 PREFACE ................................................................................................. p-1 I. MOTOR TYPES AND USAGE 1 MOTOR TYPES ....
  • Page 14TABLE OF CONTENTS B-65312EN/01 7 EXTERNAL DIMENSIONS...................................................................44 7.1 MODEL β3/10000i (FLANGE MOUNTING TYPE).......................................45 7.2 MODEL β3/10000i (FOOT MOUNTING TYPE) ...........................................46 7.3 MOD
  • Page 15I. MOTOR TYPES AND USAG
  • Page 16
  • Page 17B-65312EN/01 MOTOR TYPES AND USAGE 1.MOTOR TYPES 1 MOTOR TYPES Each model includes the types of motors listed below, and the user can make an optimal choice according to the spindle driving structure. See the ordering list (B-65311EN) for available motors. Item Type Use Remarks Connected to spindle
  • Page 182.NOTES ON INSTALLATION MOTOR TYPES AND USAGE B-65312EN/01 2 NOTES ON INSTALLATION -4-
  • Page 19B-65312EN/01 MOTOR TYPES AND USAGE 2.NOTES ON INSTALLATION 2.1 COMMON Be sure to observe the following, regardless of the connection method of the motor: WARNING When connecting a metallic conduit to a plastic terminal box, connect the conduit to ground on the power magnetics cabinet side. CAUTION 1
  • Page 202.NOTES ON INSTALLATION MOTOR TYPES AND USAGE B-65312EN/01 3 Use the eyebolt of the motor to lift only a single motor, (gear and pulley may be attached). 4 Place a cover over an air-cooled motor to prevent the motor from being exposed to coolant or lubricant. 5 Limit the vibration acceleration at th
  • Page 21B-65312EN/01 MOTOR TYPES AND USAGE 2.NOTES ON INSTALLATION 6 Dynamic balance During high-speed operation, a small imbalance may cause a large vibration, resulting in an unusual sound, premature bearing damage, or some other abnormality. Therefore, reduce the amount of the imbalance with the dynamic
  • Page 222.NOTES ON INSTALLATION MOTOR TYPES AND USAGE B-65312EN/01 7 Output shaft seal To prevent cutting lubricant or dust from penetrating inside the motor, one of the following output shaft seals is provided on the output shaft. (For the use and applicable motors, see Chapter 1, "MOTOR TYPES.") For those
  • Page 23B-65312EN/01 MOTOR TYPES AND USAGE 2.NOTES ON INSTALLATION 8 The lid of the terminal box is provided with rubber gasket to make it waterproof. Check that the lid has this gasket, then mount it on the terminal box. 9 The edge of the fauset joint to mount the flange mounting type motor should be chamf
  • Page 242.NOTES ON INSTALLATION MOTOR TYPES AND USAGE B-65312EN/01 11 If much oil mist, dust, or other foreign matter settles on the motor, the cooling performance is degraded, resulting in degraded performance of the motor. Design the machine such that only clean cooling air is drawn into the motor. Exampl
  • Page 25B-65312EN/01 MOTOR TYPES AND USAGE 2.NOTES ON INSTALLATION NOTE 1 A foot mounting type motor has no oil seal. When an oil seal is required, add #0002 to the drawing number of the motor. For details, refer to "Order List" (B-65311EN). Example) Model β12/7000i (foot mounting type, with no key, rearwar
  • Page 262.NOTES ON INSTALLATION MOTOR TYPES AND USAGE B-65312EN/01 3 Cable wiring Follow the procedure below to install the cable. (1) Use a hammer to strike the portion for the cable hole on the terminal box and open the hole. This time, pay attention not to break the other place except hole. (2) Thread th
  • Page 27B-65312EN/01 MOTOR TYPES AND USAGE 2.NOTES ON INSTALLATION *1 The nut used to fasten the connector to the terminal box must be smaller than the size listed below. (Any larger nut interferes with the terminal box.) For the diameter of the cable hole in each model, refer to the outside dimension drawi
  • Page 282.NOTES ON INSTALLATION MOTOR TYPES AND USAGE B-65312EN/01 4 Center of gravity The distance L from the flange end face to the center of gravity in each model is listed below. Center of gravity L β i series Center of gravity [mm] β3/10000i 125±5 β6/10000i 170±5 β8/8000i 150±5 β12/7000i 185±5 - 14 -
  • Page 29B-65312EN/01 MOTOR TYPES AND USAGE 2.NOTES ON INSTALLATION 2.2 WHEN A MOTOR IS CONNECTED TO A SPINDLE VIA A BELT CAUTION 1 Mounting the pulley - The gap between the inner surface of the motor pulley and output shaft should be 10µm to 15µm. - If the gap is large when the high-speed rotation (4500 min
  • Page 302.NOTES ON INSTALLATION MOTOR TYPES AND USAGE B-65312EN/01 4 Limit the radial load applied to the motor output shaft by the tension of the belt to the allowable value described in the manual for each series. If the allowable value is exceeded, the bearing or shaft may fail prematurely. 5 The tension
  • Page 31B-65312EN/01 MOTOR TYPES AND USAGE 2.NOTES ON INSTALLATION 6 Use an appropriate tension gage to tension the belt. Examples Sonic type: U-305 series manufactured by UNITTA. Mechanical type: BT-33-73F manufactured by KENT-MOORE of the United States A mechanical type tension gage may give a false readi
  • Page 322.NOTES ON INSTALLATION MOTOR TYPES AND USAGE B-65312EN/01 8 Since βi series motors are more compact than αi series motors even though both have the same power output, the allowable radial load of the βi series is smaller. Therefore, it is necessary to prevent the allowable radial load of the motor
  • Page 33B-65312EN/01 MOTOR TYPES AND USAGE 2.NOTES ON INSTALLATION 2.3 WHEN A MOTOR IS CONNECTED TO A SPINDLE VIA A GEAR CAUTION 1 Do not use a helical gear which applies a load in the motor axial direction. 2 To prevent unusual gear sounds, apply the following precautions: (1) The deviation of the gear too
  • Page 342.NOTES ON INSTALLATION MOTOR TYPES AND USAGE B-65312EN/01 2.4 WHEN A MOTOR IS DIRECTLY CONNECTED TO A SPINDLE VIA A COUPLING CAUTION 1 Use a coupling which can absorb thermal expansion in the axial direction of the motor mating shaft so that no load is applied in the motor axial direction. (Example
  • Page 35B-65312EN/01 MOTOR TYPES AND USAGE 3.NOTES ON OPERATION 3 WARNING NOTES ON OPERATION 1 When supplying voltage to the spindle motor or the fan motor, ensure that the earth cable is connected to the earth terminal and secure that the spindle motor is put to earth certainly. CAUTION 1 Sound and vibrati
  • Page 364.DETERMINING THE ACCELERATION TIME MOTOR TYPES AND USAGE B-65312EN/01 4 DETERMINING THE ACCELERATION TIME Estimated output during acceleration is the 15 minutes rated output for each model multiplied by 1.1. The time required for each acceleration for the acceleration/ deceleration output character
  • Page 37B-65312EN/01 MOTOR TYPES AND USAGE 5.DETERMINING THE ALLOWABLE DUTY CYCLE 5 DETERMINING THE ALLOWABLE DUTY CYCLE When machining requires the spindle to accelerate and decelerate frequently, the average output per cycle must not exceed the continuous rated output. The allowable duty cycle for a typic
  • Page 385.DETERMINING THE ALLOWABLE DUTY CYCLE MOTOR TYPES AND USAGE B-65312EN/01 Allowable duty cycle time Dt From the equation for getting the value of Pav[kW]. 1 2 2 2 2 Dt= × (P1 t1+P2 t2+P3 t3+P4 t4) Pav2 Substitute the continuous rated output of the used AC spindle motor for Pav [kW] in the equation a
  • Page 39B-65312EN/01 MOTOR TYPES AND USAGE 6.DISPOSAL OF SPINDLE MOTORS BY MATERIAL TYPE 6 DISPOSAL OF SPINDLE MOTORS BY MATERIAL TYPE Disposal of motors by separating plastic parts from metal parts After a motor is dismantled, the plastic parts (terminal box, terminal box cover, fan cover) must be separate
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  • Page 41II. FANUC AC SPINDLE MOTOR βi SERIES
  • Page 42
  • Page 43B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 1.GENERAL 1 GENERAL The FANUC AC SPINDLE MOTOR βi series is a highly cost- effective series having sufficient basic performance as the core machine tool. Features - High-output and high-torque are implemented defying its compact body. - Spindle HRV contr
  • Page 442.SPECIFICATIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 2 SPECIFICATIONS - 30 -
  • Page 45B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 2.SPECIFICATIONS Series β i series Model β3/10000i β6/10000i β8/8000i β12/7000i Item Rated Cont., 60 min rated kW 3.7 5.5 7.5 11 output S3 40% (*2) (HP) (5.0) (7.4) (10) (14.7) 15 min rated, S3 25% kW 5.5 7.5 11 15 (*1) (*2) (HP) (7.4) (10) (14.7) (20.1)
  • Page 462.SPECIFICATIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 (*1) The rated output is guaranteed at the rated voltage. (Amplifier input: 200/220/230VAC +10% -15%, 50/60 Hz ±1Hz) If the input voltage fluctuates, it is possible that the rated output cannot be obtained even when such fluctuations are
  • Page 47B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 3.OUTPUT/TORQUE CHARACTERISTICS 3 Reference OUTPUT/TORQUE CHARACTERISTICS Calculation for torque Torque T can be obtained by the following equation. T[N⋅m]=P[kW]×1000/0.1047/N[min-1] P[kW]: Motor output N[min-1]: Motor speed When the unit of T is [kgf⋅m]
  • Page 483.OUTPUT/TORQUE CHARACTERISTICS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 3.1 MODEL β3/10000i Output Torque [kW] [N⋅m] 8 40 15min, S3 25% 15min, S3 25% Operating Zone Operating Zone 6 5.5kW 30 60min, S3 40% Operating Zone 4 3.7kW 20 60min S3 40% 3kW Continuous Operating Operating Zone Zone 2 Con
  • Page 49B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 3.OUTPUT/TORQUE CHARACTERISTICS 3.3 MODEL β8/8000i Output Torque [kW] [N⋅m] 16 80 15min, S3 25% 15min, S3 25% Operating Zone Operating Zone 12 11kW 60 60min, S3 40% Operating Zone 7.5kW 40 60min 8 Continuous S3 40% 5.5kW Operating Zone Operating Zone 4 C
  • Page 504.CONNECTIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 4 CONNECTIONS - 36 -
  • Page 51B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 4.CONNECTIONS 4.1 POWER LEAD CONNECTION WARNING To attach the power leads, follow the procedure described in this section to make connections with specified torque. Driving a motor with terminals loosened could result in the terminal board overheating an
  • Page 524.CONNECTIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 4.2 CONNECTION OF POWER LEAD AND FAN MOTOR CABLE Cables for power lead and fan motor are connected to the terminal block. Size of screws used in Power lead Fan motor the terminal block U,V,W,G FMU,FMV,FMW Model β3/10000i to β12/10000i M5 Sc
  • Page 53B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 4.CONNECTIONS Current value of FAN MOTOR 50Hz 60Hz β i series Rated Rated Surge Rated Rated Surge spindle motor models voltage current current voltage current current [V] [A] [Ap-p] [V] [A] [Ap-p] β3/10000i, β6/10000i 200 0.10 0.41 200 0.10 0.40 β8/8000i
  • Page 544.CONNECTIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 Method of connection to a non-screw terminal for the fan motor 8 to 9mm Peel-off length of a wire sheath By using an appropriate tool, peel off each wire sheath by 8 to 9 mm. Sheath Conductor Screwdriver Use a flat-blade screwdriver with a
  • Page 55B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 4.CONNECTIONS 4.3 CONNECTION OF SIGNAL LEAD The connector manufactured by Tyco Electronics AMP is used for connection of Mi sensor signals, MZi sensor signals, and thermistor signals. The housing and contact of the connector are included in the terminal
  • Page 565.ALLOWABLE RADIAL LOAD FANUC AC SPINDLE MOTOR αi SERIES B-65312EN/01 5 ALLOWABLE RADIAL LOAD Use the motor output shaft below the allowable radial loads shown in the table below. Allowable radial load (kgf) Model At output shaft At output shaft end center β3/10000i 882N (90kgf) 999N (102kgf) β6/100
  • Page 57B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 6.ASSEMBLING ACCURACY 6 ASSEMBLING ACCURACY Model β 3/10000i to β 12/7000i Measuring method Item 1/2 the output shaft length Run-out at the end of the 20µm or less output shaft Run-out of the faucet joint for mounting the flange 10 40µm or less against t
  • Page 587.EXTERNAL DIMENSIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 7 EXTERNAL DIMENSIONS Model name Section Model β3/10000i (flange mounting type) 7.1 Model β3/10000i (foot mounting type) 7.2 Model β6/10000i (flange mounting type) 7.3 Model β6/10000i (foot mounting type) 7.4 Model β8/8000i (flange
  • Page 59B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 7.EXTERNAL DIMENSIONS 7.1 MODEL β3/10000i (FLANGE MOUNTING TYPE) - 45 -
  • Page 607.EXTERNAL DIMENSIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 7.2 MODEL β3/10000i (FOOT MOUNTING TYPE) - 46 -
  • Page 61B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 7.EXTERNAL DIMENSIONS 7.3 MODEL β6/10000i (FLANGE MOUNTING TYPE) - 47 -
  • Page 627.EXTERNAL DIMENSIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 7.4 MODEL β6/10000i (FOOT MOUNTING TYPE) - 48 -
  • Page 63B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 7.EXTERNAL DIMENSIONS 7.5 MODEL β8/8000i (FLANGE MOUNTING TYPE) - 49 -
  • Page 647.EXTERNAL DIMENSIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 7.6 MODEL β8/8000i (FOOT MOUNTING TYPE) - 50 -
  • Page 65B-65312EN/01 FANUC AC SPINDLE MOTOR βi SERIES 7.EXTERNAL DIMENSIONS 7.7 MODEL β12/7000i (FLANGE MOUNTING TYPE) - 51 -
  • Page 667.EXTERNAL DIMENSIONS FANUC AC SPINDLE MOTOR βi SERIES B-65312EN/01 7.8 MODEL β12/7000i (FOOT MOUNTING TYPE) - 52 -
  • Page 67B-65312EN/01 INDEX INDEX MODEL β8/8000i (FOOT MOUNTING TYPE) (External dimension) ................................................ 50 ALLOWABLE RADIAL LOAD .................................... 42 MOTOR TYPES............................................................... 3 ASSEMBLING ACCURACY ...
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  • Page 69Revision Record FANUC AC SPINDLE MOTOR βi series DESCRIPTIONS (B-65312EN) 01 May, 2003 Edition Date Contents Edition Date Contents
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