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EM Brno s.r.o.


Jílkova 124
615 35 Brno
Czech Republic

GPS: 49°11'50.52"N, 16°38'8.74"E




Series NL 4, NL 24



Basic Information

Gearless lift machine of the series NL 4

The structural design of the lift machine allows for the mounting directly to the top or bottom of the elevator shaft. The feeding of the frequency inverters connected to the network 3 x 400 V (UDC = 560 V), speed control using sensors depending on the type and claims ther chosen frequency converter. The lift machine can be supplied with any resolver or encoder according to customer specifications.

Gearless NL 4 are characterized by the following distinctive advantages:  
  • savings in construction costs
  • at least double the lift effectiveness as op opposed to conventional machines with worm gear
  • continuous speed control of motor speed or lift cabins from zero to maximum values
  • significant reduction in traction currents when sarting or braking the lift cabin
  • high accuracy speed control or speed of movement of the lift cabin
  • substantial reduction in noise levels
NL 4 lift machines offer either a removable or fixed traction pulley. Optional manual rescue equipment. 
 

Gearless lift machine of the series NL 24

 

Lift machines in this series are small in size, but great in power.
They are designed for use of elevator cable in the diameter of 6,0 or 6,5 mm. 
 
Advantages of the new solution: 
  • 1/3 weight reduction of the machines NL 24 in comparison with NL 4, while retaining the cpacity of the elevator
  • small built-in dimensions, top view width 250 mm
  • high static loading of the pulley till up to 30 kN
  • pulley position between the bearing of high operational reliability 
  • noiseless and smooth operation with enhanced energy efficiency and reduced operating costs
  • the possibility of manual release using a single lever on the machine or the remote control using a release wire 
  • double electromagnetic brake
  • the possibility of the pulley velocity increase up to 4 m/s
  • power and signal cable on request possible
Pulleys are made of ductile iron suitable for diameters D/d 40. For smaller diameter D/d  25 is hardened pulley with hardness of at least 50 HRc recommended. Upon request, we provide the hardening of pulleys.
 

Technical Information

Gearless lift machine of the series NL 4

 
NL 4 series lift machines are designed in the same type size (diameter of pulley) in four motor lengths.
The synchronous stator is located inside the rotor, on whose inner circumference permanent magnets are attached. The outer surface of the rotor serves simultaneously as a pulley and as a double safety brake surface.
The transfer of the total load of the lift machine in the base is secured by two evenly loaded roller bearings and two side panels on both sides of the pulley.
 
Type of gearless lift machine
NL40630
NL40800
NL41000
NL41250
Pulley diameter
mm
400/430
400/430
400/430
400/430
Max. loading             
kN
30
30
40
40
Torque                   
Nm
355
450
550
690
Mass                     
kg
240
280
320
380
Roping  1:1
Payload                              
kg
320
400
500
630
Speed    
min-1
48
48
48
48
Power                           
kW
1,8
2,3
2,8
3,5
Pulley velocity
m/s
1,0
1,0
1,0
1,0
Cabin velocity
m/s
Roping  2:1      
Payload                         
kg
630
800
1 000
1 250
Speed                         
min-1
95
95
95
95
Power                          
kW
3,5
4,5
5,6
6,9
Pulley velocity
m/s
2,0
2,0
2,0
2,0
Cabin velocity
m/s
1,0
1,0
1,0
1,0

 

 Gearless lift machine of the series NL 24

 
 
Type of gearless lift machine
NL 240630
NL 240800
NL 241000
Pulley diameter
mm
240
240
240
Max. loading               
kN
30
30
30
Torque                     
Nm
220
280
340
Mass                     
kg
175
190
205
Roping 1:1          
Payload                          
kg
320
400
500
Speed     
min-1
80
80
80
Power                      
kW
1,85
2,35
2,85
Pulley velocity
m/s
1,0
1,0
1,0
Cabin velocity
m/s
Roping 2:1
Payload                     
kg
630
800
1 000
Speed                      
min-1
160
160
160
Power                       
kW
3,7
4,7
5,7
Pulley velocity
m/s
2,0
2,0
2,0
Cabin velocity
m/s
1,0
1,0
1,0
 
 
Detailed information can be found under the tab Documents for download.
 

 

20.11.2017  SPS/IPC/DRIVES 2017
 Dear customer, we invite you to visit us on  Electric Automation - Systems and Components Trade Fair   SPS/IPC/DRIVES 2017 from 28. to 30. November 2017 in Nuremberg.   You will be welcome in our exposition, hall 3, stand 660.  
04.09.2017  IEF Brno 2017
  International Engineering Fair in Brno 9. - 13.10. 2017   We invite you to visit our exhibition at the International Engineering Fair in Brno in the hall Z, stand 131.        We are looking forward to meet you.   I-catalogue of exhibitors and products Map of Exhibition Centre