Basic parameters and main dimensions of NL drum gear coupling
● The internal tooth-shaped elastic coupling is currently the latest domestic product and has been widely used abroad. This product is designed by the Jinan Foundry and Forging Machinery Research Institute of the Machinery Committee. It is suitable for flexible transmission between shafts and allows larger It has the advantages of simple structure, convenient maintenance, easy disassembly and assembly, low noise, low transmission efficiency loss, and long service life. It is very popular with users.The shaft hole types are cylindrical (Y), conical (Z) and short cylindrical (J).The shaft hole and keyway are processed in accordance with the national standard GB3852-83 "Coupling shaft hole and keyway form and size".The working temperature is -20~+70℃.
●The semi-coupling adopts precision casting, cast iron HT20-40, cast steel ZG35Ⅱ, and the shaft hole and keyway are formed by drawing. The inner gear coupling elastomer jacket can be selected from various hardness synthetic rubber grease rubber according to the user's requirements; Reinforced cast nylon elastomer and other materials.In order to meet the needs of the renewal and transformation of various machinery and the introduction of equipment and spare parts, our company can provide a complete range of internal tooth elastic couplings, and can accept non-standard orders according to user needs.Hydraulic coupling
Order marking method:
For example: NL4 internal tooth elastic coupling (keyway according to GB3852-83 standard)
Active shaft: d1=38 L1=80
Driven shaft: d2=30 L21=50
表示为NL4:38×80/30×50(非标注明键槽尺寸)
Model |
Nominal torque Tn (NM) |
Allowable speed n (r/min) |
Main size (mm) | *Large size deviation |
Moment of inertia (KgC m 2) |
weight (Kg) |
||||||||
Diameter of shaft hole d1 d2 |
Length of shaft hole |
L | D |
D1 D2 |
E | L3 | Axial (mm) | Radial (mm) | Angle α° | |||||
NL1 | 40 | 6000 | 6 8 10 |
16 20 25 32 |
37 45 55 69 |
40 |
26 | 4 | 34 | 2 | ± 0.3 | 1 ° | 0.25 | 0.85 |
12 14 | ||||||||||||||
NL2 | 100 | 6000 | 10 12 14 22 |
25 32 42 52 |
57 71 91 111 |
42 |
36 | 4 | 40 | 2 | ± 0.4 | 1 ° | 0.92 | 1.7 |
16 18 20 24 | ||||||||||||||
NL3 | 160 | 6000 | 20 22 24 | 52 62 |
113 133 |
66 |
44 | 4 | 46 | 2 | ± 0.4 | 1 ° | 3.10 | 2.6 |
25 28 | ||||||||||||||
NL4 | 250 | 6000 | 28 30 32 | 62 82 |
129 169 |
83 |
58 | 4 | 48 | 2 | ± 0.4 | 1 ° | 8.69 | 3.6 |
35 38 | ||||||||||||||
NL5 | 315 | 5000 | 32 35 38 | 82 112 |
169 229 |
93 |
68 | 4 | 50 | 3 | ± 0.4 | 2 ° | 14.28 | 5.5 |
40 42 | ||||||||||||||
NL6 | 400 | 5000 | 40 42 45 | 82 112 |
230 |
100 |
68 | 4 | 52 | 3 | ± 0.4 | 2 ° | 18.34 | 6.8 |
48 | ||||||||||||||
NL7 | 630 | 3600 | 45 48 50 | 82 112 |
229 |
115 |
80 | 4 | 60 | 3 | ± 0.6 | 2 ° | 56.5 | 9.8 |
55 | ||||||||||||||
NL8 | 1250 | 3600 | 48 50 55 | 112 142 |
229 289 |
140 |
96 | 4 | 72 | 3 | ± 0.6 | 2 ° | 98.55 | 26.5 |
60 63 65 | ||||||||||||||
NL9 | 2000 | 2000 | 60 63 65 | 142 172 |
295 351 |
175 |
124 | 6 | 93 | 4 | ± 0.7 | 2 ° | 370.5 | 37.6 |
70 71 75 80 | ||||||||||||||
NL10 | 3150 | 1800 | 70 71 75 80 |
142 172 212 |
292 352 432 |
220 |
157 | 8 | 110 | 4 | ± 0.7 | 2 ° | 1156.8 | 55 |