China supplier Nmrv/Nrv Nmrv130 Worm Gear Speed Reduction Reducer Gearbox automatic gearbox

Product Description

NMRV  REDUCTION WORM GEARBOX
The NMRV 130 single-stage worm gear motor develops torque on the output shaft in the range from 280 to 1596 N * m. The unit is supplied with an IEC motor with a power of 0.75 – 7.5 kW. Radial load on the shaft – up to 18 000 N.
The gear housing is made of gray cast iron grade G200, has a protective powder coating.
Materials parts:
Body – iron, flanges – iron, worm – steel CHINAMFG worm wheel – bronze. 
Type of lubricant: synthetic ISO VG 220. 
Weight: 48 kg.

Type designation scheme

NMRV – 130 – 7.5 – 120 – 4 – B3

  • NMRV – worm gear motor
  • 130 – size (center distance, mm)
  • 7.5 – gear ratio
  • 120 – output shaft rotation speed, rpm
  • 4 – electric motor power, kW
  • B3 – mounting position

NMRV 130 gearbox performance

i n 1 = 2800 rpm n 1 = 1400 rpm n 1 = 900, rpm
n 2 ,
rpm		 T 2M ,
N * m		 P
kw		 RD
%		 n 2 ,
rpm		 T 2M ,
N * m		 P
kw		 RD
%		 n 2 ,
rpm		 T 2M ,
N * m		 P
kw		 RD
%
7.5 373 571 24.00 92 187 780 16.80 91 120 935 13.20 89
10 280 606 19.30 92 140  817 13.30 90 90 980 10.50 88
15 187 668  14.50 90 93  876 9.80  87 60 1015  7.50 85
20 140 735  12.10 89 70  950 8.10  86 45 1092  6.20 83
25 112 645  8.40 90 56  795 5.50  85 36 914  4.20 82
30 93 655  7.50 85 47  683  4.20  80 30 735  3.00 77
40 70 781  6.90 83 35  959  4.50  78 23 1090  3.50 75
50 56 787  5.70 81 28  985  3.80  76 18 1084  2.80 73
60 47 748  4.60 80 23  965  3.10  75 15 1040  2.30 71
80 35 648  3.30 72 18  782  2.20  67 11 959  1.70 65
100 28 605  2.50 71 14  765  1.70  66 9 855  1.30 62
  • n1 – rotational speed el. engine;
  • n2 – revolutions on the output shaft;
  • T 2M – torque on the output shaft;
  • P is the maximum allowable engine power;
  • RD – efficiency

GEARBOX FEATURE

1.Good quality,long life time,low noise.
2.Compact,convenient.
3.High efficiency,big torque.

 

Overall and mounting dimensions NMRV 130

NMRV130 gear motor  has a wide range of gear ratios.
Gear ratios: 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 .

Output flange to NMRV 130 gearbox

Geared NMRV130 can be supplied with unilateral or bilateral output shaft. 
The gearbox comes standard with a hollow output shaft

A torque arm is an additional option to the gearbox.

  Model  NMRV SERIES
  Single Stage  RV25-RV150
  Ratio  7.5-100
  Input Power  0.06KW-15KW
  Output Speed  14-280rpm
  Output Torque   5-1800Nm
Core parts  worm wheel,worm shaft
 Core parts material      worm shaft:20 Cr Mn Ti,worm wheel:Nodular cast iron interal,9-4 copper external
  Lubrication   RV30-90:synthetic oil, RV110-150:GN460-W mineral oil
 Bearings  C&U

 
 
 

Application: Motor, Motorcycle, Machinery, Agricultural Machinery, Industry
Hardness: Hardened
Installation: Any Angle
Gear Shape: Worm Gear
Step: Single-Step
Type: Worm and Wormwheel
Samples:
US$ 20/Piece
1 Piece(Min.Order)

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Customization:
Available

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gearbox

How to Calculate Gear Ratio in a Gearbox

Gear ratio is a fundamental parameter in a gearbox that represents the ratio of the number of teeth between two gears. It determines how much the output gear rotates in relation to the input gear. The formula to calculate gear ratio is:

Gear Ratio (GR) = Number of Teeth on Output Gear / Number of Teeth on Input Gear

Here’s a step-by-step guide on how to calculate gear ratio:

  1. Identify the input and output gears in the gearbox.
  2. Count the number of teeth on the output gear (the gear connected to the output shaft).
  3. Count the number of teeth on the input gear (the gear connected to the input shaft).
  4. Plug the values into the gear ratio formula: GR = Number of Teeth on Output Gear / Number of Teeth on Input Gear.
  5. Calculate the gear ratio by performing the division.

The gear ratio provides insight into how much the input gear needs to rotate to achieve a certain rotation of the output gear. It influences torque, speed, and direction of rotation in the gearbox.

China supplier Nmrv/Nrv Nmrv130 Worm Gear Speed Reduction Reducer Gearbox automatic gearbox China supplier Nmrv/Nrv Nmrv130 Worm Gear Speed Reduction Reducer Gearbox automatic gearbox
editor by CX 2023-10-24