Edition Low Backlash Planetary Gear Units 03/20011 4 Operating Instructions - Low Backlash Planetary...
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Low Backlash Planetary Gear UnitsEdition
03/2001
Operating Instructions1051 4015 / EN
SEW-EURODRIVE
Operating Instructions - Low Backlash Planetary Gear Units 3
Contents
1 Important Notes............................................................................................ 4
2 Safety Notes ................................................................................................. 5
3 Setup and Installation.................................................................................. 63.1 Before you begin.................................................................................. 63.2 Required tools / resources ................................................................... 63.3 Preliminary work .................................................................................. 63.4 Installing the gear unit.......................................................................... 63.5 Installation in the machine ................................................................... 73.6 Mounting output elements.................................................................... 83.7 Motor mounting with EK coupling ...................................................... 10
4 Startup......................................................................................................... 124.1 Starting operation of low backlash planetary gear units .................... 12
5 Operation and Servicing............................................................................ 135.1 Troubleshooting ................................................................................. 135.2 Inspection and maintenance .............................................................. 13
6 Mounting Positions.................................................................................... 146.1 General information about mounting positions .................................. 146.2 PSF211 PSF902 ............................................................................. 156.3 PSB311 PSB612............................................................................. 166.4 PSE211 PSE612............................................................................. 17
Addresses................................................................................................... 18
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1 Important NotesSafety and warning instructions
Always follow the safety and warning instructions contained in this publication!
A requirement of fault-free operation and fulfillment of any rights to claim underguarantee is that the information in the operating instructions is adhered to.Consequently, read the operating instructions before you start working with the drive!
The operating instructions contain important information about servicing; as a result,they should be kept in the vicinity of the unit.
Waste disposal Please follow the current instructions:
Housing parts, gears, shafts and anti-friction bearings of the gear units must bedisposed of as steel scrap. The same applies to gray cast iron castings unless thereare separate collection arrangements.
Collect waste oil and dispose of it correctly.
Hazard Possible consequences: Severe or fatal injuries.
Hazardous situationPossible consequences: Slight or minor injuries.
Harmful situationPossible consequences: Damage to the drive and the environment.
Tips and useful information.
Operating Instructions - Low Backlash Planetary Gear Units
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2 Safety NotesPreliminary remarks
The following safety notes are principally concerned with the use of gear units.
If using geared motors, please also refer to the safety notes for motors in thecorresponding operating instructions.
General information
During and after operation, geared motors and gear units have live and moving partsand their surfaces may be hot.
All work related to transport, putting into storage, setting up/mounting,connection, startup, maintenance and repair only by trained personnel observing
the corresponding detailed operating instructions booklet(s) and wiringdiagrams,
the warning and safety signs on the gear unit/geared motor,
the specific regulations and requirements for the system and
national/regional regulations governing safety and the prevention ofaccidents.
Severe injuries and damage to property may result from
incorrect use,
incorrect installation or operation,
removal of required protective covers or the housing when this is not permitted.
Designated use These geared motors/gear units are intended for industrial systems. They correspondto the applicable standards and regulations. The technical data and the informationabout permitted conditions are to be found on the nameplate and in the documentation.
It is essential for all specified information to be observed!
Transport / putting into storage
Inspect the delivery for any damage in transit as soon as you receive the delivery. Informthe transport company immediately. It may be necessary to preclude startup.
Use suitable, sufficiently rated handling equipment if necessary. Remove any transportfixtures prior to startup.
Store the gear unit in a dry, dust-free room if it is not going to be installed straightaway.
Operating Instructions - Low Backlash Planetary Gear Units
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efore you begin
3 Setup and Installation3.1 Before you begin
The drive may only be installed if
the entries on the nameplate of the drive match the voltage supply system,
the drive is undamaged (no damage caused by transport or storage) and
it is certain that the following requirements have been fulfilled:
with standard gear units: ambient temperature between -10 C and +60 C, no oil,acid, gas, vapors, radiation, etc.
with special versions: drive configured in accordance with the ambient conditions.
3.2 Required tools / resources
Set of spanners
Torque wrench (+ set of screwdrivers with a long hexagonal driver)
Mounting device
Shims and distance rings if necessary
Fixing devices for input and output elements
Lubricant (e.g. NOCO fluid)
3.3 Preliminary work
The output shafts and flange surfaces of the motor to be mounted must be thoroughlycleaned of anti-corrosion agents, contamination or such like (use a commerciallyavailable solvent). Do not let the solvent come into contact with the sealing lips of the oilseals danger of damage to the material!
3.4 Installing the gear unit
The gear unit or geared motor may only be mounted or installed in the specifiedmounting position on a level1, vibration damping and torsionally rigid support structure.Use plastic inserts (2 3 mm thick) if there is a risk of electrochemical corrosion betweenthe gear unit and the driven machine (connection between different metals such as castiron and high-grade steel)! Also fit the bolts with plastic washers. Ground the housingadditionally use the grounding bolts on the motor.
1. Maximum permitted flatness error for flange mounting (approximate values with reference to DIN ISO1101): with flange 120 600 mm max. error 0.2 0.5 mm
B
Operating Instructions - Low Backlash Planetary Gear Units
3Installation in the machine
3.5 Installation in the machine
In contrast to the PSF series, PSE gear units are installed on the existing machine usingtapped holes in the gearcase.
PSE gear unit:Fit screws from machine side
PSF gear unit:Fit screws from gear unit side
50219AXXFig. 1: Installation of PSE gear unit in the machine
PSE
50220AXXFig. 2: Installation of PSF gear unit in the machine
PSF
Operating Instructions - Low Backlash Planetary Gear Units
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ounting output elements
3.6 Mounting output elements
Fig. 3 shows a sample mounting device for installing couplings (3) or hubs onto motoror gear unit shaft extensions (4). It may be possible to dispense with the thrust bearing(2) on the mounting device.
When input and output elements are mounted on PSF series units, the shaft nut onthe input and output shaft must not be used as a stop for transmission elements (beltpulley, pinion gear, etc.).
When input and output elements are mounted on PSE series units, the shaft shoulder(Fig. 3, no. 1) is allowed to be used as a defined stop point.
Fig. 4 shows the correct mounting arrangement of a gear or sprocket in order to avoidimpermissibly high overhung loads.
Only use a mounting device (see Fig. 3) for installing input and output elements. Usethe center bore and the thread on the shaft end for positioning purposes.
Never drive belt pulleys, couplings, pinions, etc. onto the shaft end by hittingthem with a hammer (damage to bearings, housing and the shaft!).
In the case of belt pulleys, make sure the belt is tensioned correctly (inaccordance with the manufacturers instructions).
Transmission elements should be balanced after fitting and must not give rise to anyimpermissible radial or axial forces (see Fig. 4 / for permitted values, see the "LowBacklash Planetary Gear Units" catalog).
50278AXXFig. 3: Sample mounting device
50279AXXFig. 4: Correct mounting arrangement of a gear or sprocket
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Operating Instructions - Low Backlash Planetary Gear Units
3Mounting output elements
Mounting couplings
Couplings must be mounted and balanced according to the information provided by thecoupling manufacturer:
A Maximum an
