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Gearboxes


These gearboxes are suitable for the transmission of rotating motions between two shafts at right-angles.

• Available with reduction ratios: 1:1 - 1:2 in reducing (standard) - 2:1 in multiplying (on request available in version A-B-C, not availabe in version D*)
• Aluminium case, anodised, stainless steel shafts AISI 303
• Torque 12 Nm
• Radial load 25 kg - axial load 2,5 kg

• Models: 
  Version A with 2 outputs
  Version B with 3 outputs  
  Version C 
with 3 ouputs with opposite rotation
  Version D with 3 outputs, 2 through hollow shafts
  Version E with 4 outputs 

• output shafts: M = male / F = female Ø10
 
(see section "Overall dimensions")
• 2 outputs, weight gr. 300; 3 outputs, weight gr. 400

➤ Available on request:
• Output shafts male Ø14 / female Ø12 - Ø14
• Version with case in stainless steel AISI 303
• Models with spiral bevel gears in versions A-B-C-D-Eratio 1/1-1/2-2/1*. The 'SP' spiral gearboxes allow high precision, silent operation, and 30% increased output torque.
 


 

Photogallery

OUTPUT SHAFTS

M = male

 

F = blind female


 

F = female through shaft (available only on version "D")

COUPLING BUSHES

            

            Ø10-F12                                                      Ø10-F14

 VERSION "A" M-M 

                       

VERSION "A" M-F            


VERSION "A" F-F


VERSION "B" M-M-M


VERSION "B" F-M-M


VERSION "C" M-M-M with opposite rotation

VERSION "C" M-F-F with opposite rotation


VERSION "C" F-M-M with opposite rotation

VERSION "C" F-F-F with opposite rotation

 VERSION "D" M-F-F with through-hollow shaft 



 VERSION "D" F-F-F with through-hollow shaft 


 VERSION "E" M-M-M-M



VERSION "E" F-F-F-F


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REPRESENTATION OF REDUCTION AND MULTIPLYING RATIOS          

                                                   

                               

Example:
1:2 
in reducing                   2:1 in mulitplying (not available in version D)
n1 
= 1000 rpm                   n1 = 1000 rpm
n2 
= 500 rpm                     n2 = 2000 rpm


The ratio and the configuration are determined by the input shaft (always shown in the bottom of the drawing n1), the others shaft following clockwise.

 

     RADIAL AND AXIAL LOAD 
      Fr = 250 N, radial load, is the load acting in perpendicular direction to the shaft/axise   



Fa = 25 N, axial load, is the load acting of the shaft/axis  

T = 12 Nm output torque

The loads acting on the shafts can be of two types (referred to the axis of the shaft)
Fr - radial load 
Fa - axial load, when ordering specify whether the axial load is 'pull' or 'push' type. 
«The loads are generated by the items connected to the gearbox and can be created for example by the pull of belt drives, accelerations and decelerations, structural misalignments, vibrations, shocks, etc.» 

 GEARBOX LIFETIME CALCULATION
Straight bevel gears  Spiral bevel gears 'SP'
      
THEORETIC EXPECTED LIFE = 10.000H X Fu


                   RECOMMENDED TORQUE (Nm) 
Fu = --------------------------------------------
            APPLIED TORQUE (Nm)
   
     


 The lifetime of 10.000h considers the following conditions: 
• Applied torque = advised torque (see tables) 
• Maximum of 8 working hours per day 
• Working temperature 20 °
• No shocks 
• The spiral bevel gearboxes 'SP' allow a 30% increased output torque 

➜ In case of continuous use, please contact our Technical Dept. In such applications, a grease fitting will be installed to allow periodic addition of lubricant with a frequency based on the work conditions.

 Max torque «Nm»
  Recommended torque «Nm» 

Output torque with ratio 1:1 
Max torque
12
10,2
9
8
6,8
5,5
Recommended torque
8
6,8
5,8
4,9
4,1
3,5
Max torque 'SP'
15,6
13,2
11,7
10,4
8,8
7,1
Recommended torque 'SP'
10,4
8,8
7,5
6,3
5,3
4,5
rpm
50
100
200
400
800
1400
  Efficiency = 90%

 

Output torque with ratio 1:2
Max torque
8,9
7,5
6,7
5,9
5
4,1
Recommended torque
5,5
4,7
4,1
3,7
3,1
2,5
Max torque 'SP'
 11,6 9,7  8,7  7,7  6,5  5,3 
Recommended torque 'SP'
 7,2 6,1  5,3  4,8  3,2 
rpm
50
100
200
400
800
1400
Efficiency = 90% 

 

Ouput torque with ratio 2:1      
Max torque
4
3,4
3
2,6
2,2
1,85
Recommended torque
2,7
1,3
2
1,8
1,5
1,25
Max torque 'SP'
5,2
4,4
3,9
3,4
2,8
2,4
Recommended torque 'SP'
3,5
3
2,6
2,3
2
1,6
rpm
50
100
200
400
800
1400
Efficiency = 90%  

 

⦿ To choose the most suitable gearbox, we advise to consult also the figures, table, and the technical data shown in the "General Information".