Designation

The table is intended for the precise determination of the type number. The variable speed drive proper is determined by five digits, the further two digits indicate the appertaining control. If there is concerned a combination of the variable speed drive with a gearbox, it is expressed according to the construction and size together with the clutch by other two digits. Designs of various positions of variable speed gear-boxes are stated in the table. If the conditions allow, it is the best to prefer two basic positions - horizontal position with feet or vertical position with feet. In case of vertical positions, the regulating screw is located in the upper part as far as possible. When the variable speed gear-box is built in a machine, it is necessary that it may be situated outside to facilitate access and inspection. The variable speed gear-box without countershaft only may be mounted on the flange. 

a) Type: VA - variator

back to scheme of designation

b) Size:

back to scheme of designation

c) Control range:

back to scheme of designation

d) Chain final tightener:
Letter "B" after the second figure says the variator is provided by automatic chain final yokeless tightener.

back to scheme of designation

e) Design of input:

code	1	2	3	4	5
Countershaft	simple	with single coun.	with double coun.	with triple coun.	with planet coun.
code	6	7	8	9
Countershaft	with movable countershaft	with countershaft with bevel gears	single worm countershaft	double worm countershaft

back to scheme of designation

f) Drive execution:

code	0	1	2	3	4	8
Execution	foot-type motor	flanged motor	motor on the box	reduction from motor	flanged motor, safety clutch	differential gear

back to scheme of designation

g) Position:

code	1	2	3	4
Position	horizontal	vertical	suspended vertical	vertical, fixed on the side
code	5	6	7
Position	suspensed horizontal	horizontal, fixed on the flange	vertical, fixed on the flange

back to scheme of designation

h) Regulation:

code	0	1	2	3	4
Regulation	manual with indicator	manual without indicator	by regulation pin	manual with special indicator	remote mechanical DM1
code	5	6	7	8
Regulation	remote mechanical DM2	remote mechanical DM3	electrical remote horizontally	electrical remote vertically

back to scheme of designation

i) Location of Regulation:

code	0	1	2	3	4
Location of regulation	regulating screw up	regulating screw down	regulating screw on the left	regulating screw on the right	regulating pin up
code	5	6	7	8	9
Location of regulation	regulating pin on the left	regulating pin on the right	regulating pin up with indicator	reg. pin on the left with indicator	reg. pin on the right with indicator

Example of type number determination

A variable speed gear-box for transmission of 4 kW output with the control range of 1:4.5. Driving speed of 830 r.p.m., output speed of 177 to 796 r.p.m. Driven by a foot-type electric motor situated off the variable speed gear-box - by means of V-belts. Horizontal type of the variable speed gear-box. Hand control with a speed indicator. The regulating screw is situated on the left (when looked at from the output of the variable speed gear-box shaft).

Foot-type motors are not included in the delivery subject matter.

Instructions for ordering

In order that we may deliver a variable speed gear-box a correct design according to your choice, we ask you kindly to state technical data according to following instructions in your order. As far as all your requests are not contained in the instructions, kindly let us have the same or send us a diagrammatic sketch.

Basic informations | upward | Technical parameters