Introduction of worm gear speed reducer>> Service factor & Installation notice

Introduction of
worm gear speed reducer
Service factor & Installation notice
Mesh data
  NMRV Performance
  NRV Performance

NMRV series
worm gear speed reducer
NMRV/NRV series
NMRV/NRV Mode l& marker
NMRV/NRV Pos.of output shaft &  torque arm
NMRV/NRV Chice of lubricant
NMRV Dimensions
NRV Dimensions & Low speed shafts
Cover & Torque arm
NMRV Inch series
PC-NMRV series
PC-NMRV Model & marker
PC-NMRV Combinations
PC-NMRV Dimensions
NMRV-NMRV series
NMRV-NMRV Model & marker
NMRV-NMRV Parameter table
NMRV-NMRV Dimensions
NRV-NMRV Dimensions
PAM series
Combination of basic model and worm-gear speed reducer

UDL Series planetary cone & disk step-less speed variator
UDL Model & marker
UDL Dimensions


   Service factor

The service factor(f.s.)depends on the operating conditions the gearbox is subjected to. Following parameters need to be taken to select the right service factor. speed reducer, gear reducer, worm gear reducer
      --type of load of the operated machine A - B - C
      --length of daily operating time: hours/day(△)
      --start-up frequency: starts/hour (*)
TYPE OF LOAD:A-uniform,fa≤0.3
                            B-moderate shocks,fa≤3
                            C-heavy shocks,fa≤10
      --Jex(kgm2) moment of the external inertia reduced at the drive shaft
      --Jm(kgm2) moment of inertia of motor
speed reducers, gear reducers, worm gear reducers

   To install the reduction unit it is necessary to note the following recommendations

--The mounting on the machine must be stable to avoid any vibration.
--Check the correct direction of rotation of the reduction unit output shaft before fitting the unit to the machine.
--In the case of particularly lengthy periods of storage (4-6 months) if the oil seal is not immersed in the lubricant
  inside the unit,It is recommended to change it since the rubber could stick to the shaft or even has lost the elasticity
  it needs to function properly. speed reducer, gear reducer, worm gear reducer
--For a shaft mounting, for reduction units with a hollow output shafts, use the torque arms we can supply. If it is not
   possible,make sure that the constraint is axially free and with such play as to ensure free movement for the reduction
--Whenever possible, protect the reduction unit against solar radiation and bad weather.
--Ensure the motor cools correctly by assuring good passage of air from the fan side.
--In the case of ambient temperatures <-5°C and >+40°C contact technical advise service .
--The various parts ( pulleys, gear wheels, couplings, shafts, etc.) must be mounted on the solid or hollow shafts
   using  special holes or other systems that anyhow ensure correct operation without risking damage to the bearings
   or external parts of the unit
--Painting must definitely not go over rubber parts and the holes on the breather plugs, if there are any.
--Taking out the seal embolism of the oilhole.
--Check the height of the oil level.
--Supposing the gear unit have not coupled with the motor,please pay attention to the following items to make sure
   rightly  connection. Mounting to B5,B14
--Check whether the tolerance between the shaft and motor flange fit for the essential standard.
--Washing the dirt and the paint on the surfaces of the shaft,center bore and the flange. speed reducers, gear reducers, worm gear reducers, reducer, reducer motor, worm reducer, gear speed reducer, geared speed reducer, gear reducer motor, worm gear, planetary gearbox, morse gear reducer, reducing, single reducer, double reducer, gear motor, worm gear motor, double-shaft reducer, geared motor, dc gear motor, dc geared motor, gear head motor, electric gear motor, AC gear motor, small gear motor, gear reduction motor, ac gear motor, motor cross gear, gear drive motor, dc geared motor, gear unit, power unit, ac geared motor, brake power unit, cylinder gear gearmotor, in-line gearmotor, worm gearbox, worm gear box, modular worm gearmotor, motor starter, planetary gearbox, right angle gearbox, electric motor starter, manual motor starter, ac motor starter
--Mounting avoid the gear unit incur strength .
--Check the position and the difference of the motor keyslot.
--Lubricate the surfaces in contact to avoid seizure or oxidation.
--Starting must take place gradually, without immediately applying the maximum load.
--When there are parts objects or materials under the motor drive that can be damaged by even limited spillage of oil,     special protection should be fitted.

speed reducer, gear reducer, speed variator


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