Mechanical worm reducers SHF  

 

Mechanical worm reducers SHF  

Power transmission:
range of transmitted input power: 0.06 kW ÷ 15.0 kW
Gear ratio i =
1-speed transmission: 7.5 ÷ 100
double transmission: 100 ÷ 5000
transmission with a cylindrical degree: 61,25 ÷ 300
Output torque:
1-speed transmission: 2 Nm ÷ 1760 Nm
double transmission: 38 Nm ÷ 3057 Nm
transmission with a cylindrical degree: 40 Nm ÷ 1150 Nm
Materials:
base - structural alloy steel 20Cr
worm wheel - G-CuSn12Ni12 bronze (DIN1705) with a core from G20 pig-iron
housing - aluminum ADC12 or cast iron HT200 (for SHF110, SHF130 and SHF150)

The code marking of the SHF series worm reducers contains all the necessary data for the exact identification of the reducer or motor reducer. It is divided into four groups: the first applies only to SHF reducers, the second - worm motor reducers SHF, the third - double worm reducers SHF, the fourth - double worm motor reducers SHF.

Code marking of the SHF reducer - will be used when ordering a worm reducer SHF.

 

Code marking of the worm SHF motor reducer - will be used when ordering a worm motor reducer SHF.

 

Code marking of the double worm SHF reducer - will be used when ordering a double worm reducer SHF.

 

Code marking of the double worm SHF motor-reducer - will be used when ordering a double worm motor reducer SHF.

The mounting position of the SHF worm reducer is important for the correct execution of the order. The design of SHF worm reducers allows to install them in various positions depending on mechanical needs of the device. All worm reducers delivered to the customer are filled with oil in accordance with the mounting position specified in the order. Before installing the SHF engine in a position other than the one specified in the order, check the oil quantity requirement in the reducer unit in accordance with the operating instructions or the operating and maintenance documentation (DTR documentation).

If the customer has not specified the required mounting position in the order for the motor reducer or worm reducer SHF, then by default this mounting position is M1 (B3), and the worm reducer is filled with oil that corresponds to the specified position.

Permissible mounting positions for the SHF series worm motor reducer

 

Acceptable mounting positions for SHF series double worm motor reducers

The design of SHF worm reducers and SHF double worm reducers allows the use of mounting accessories depending on the installation needs. If it is necessary to install the worm reducer directly on the housing of the device, the output flanges which have been developed for various sizes and intervals of fastening of bolts can be used. Mounting the worm reducer directly on the shaft of the device is also possible thanks to the reaction lever. As standard, the worm reducer has an output sleeve (shaft), if necessary, a single or double (double-sided) output shaft can be used. The above accessories can be installed on the reducer yourself or ordered immediately installed. Accessories for worm reducers are also included in the code designation of this device.

 

Code marking of the output flange - when ordering a worm reducer SHF or a double worm reducer

 

Code marking of a continuous output shaft - when ordering a worm reducer SHF or a double worm reducer

 

Code marking of the reaction shoulder- when ordering a worm reducer SHF or a double worm reducer

 

The dynamic efficiency of the reducer is determined mainly in terms of possible friction in the connection and bearings. It should be noted that the efficiency of reducers during start-up is lower than the efficiency at operating speed - especially for worm reducers. It should be noted that the efficiency of the reducera during start-up is lower than the efficiency at the operating speed - especially for worm reducers. SHF worm reducers and SHF double worm reducers show greater gear losses than other reducers in the ALU-G Motion series. The influence of factors influencing their dynamic efficiency should also be taken into account. These factors include the type of oil, the temperature of the reducer and the speed of rotation of the drive elements. In addition to dynamic efficiency, worm gearboxes are also characterized by static efficiency, which occurs during start-up. This value clearly affects the reduction of output power and, thus, obtaining a lower output torque. This factor should be taken into account when choosing a worm reducer, especially for devices where the work is intermittent, such as lifts, elevators, conveyors, faucets, etc.

 

Dynamic and static efficiency of SHF worm reducers

 

Dynamic and static efficiency of SHF double worm reducers