平面包络环面蜗杆减速机(JB/T9051-1991)为平面一次包络蜗杆传动。中心距：100、125、160、200、250、315、400、500。速比：10、12.5、16、20、25、31.5、40、50、60。平面包络环面蜗杆减速机是一种新兴的传动装置，其承载能力大，传动效率高，结构紧凑、合理。这种减速机可以广泛地应用于各种传动机械中的减速传动，如冶金、矿产、起重、化工、建筑、橡塑、船舶等行业以及其它机械设备上，适用工作环境温度为-40℃～+40℃，输入轴转速不大于1500转/分，蜗杆轴可正反两方向旋转。此减速机是按照中华人民共和国机械行业标准JB/T9051——1999《平面包络环面蜗杆减速机》设计制造。
Model and marking example
2 Marking example
For example, the worm is under the worm wheel, the center distance is 200mm, the nominal transmission ratio is 10, the second assembly type, there is a fan-cooled plane
Enveloping toroidal worm reducer:
Reducer TPU200-10-2F JB/T 9051—1999
Center distance a (mm)
| model | Center distance a | |||||||||||||
| TPG | The first series | 80 | 100 | — | — | — | — | — | — | — | — | — | — | — |
| Second series | — | — | — | — | — | — | — | — | — | — | — | — | — | |
| TPU | The first series | 125 | — | 160 | — | 200 | — | 250 | — | 315 | — | 400 | — | 500 |
| Second series | — | 140 | — | 180 | — | 224 | — | 280 | — | 355 | — | 450 | — | |
| GST | The first series | 125 | — | 160 | — | 200 | — | 250 | — | 315 | — | 400 | — | 500 |
| Second series | — | 140 | — | 180 | — | 224 | — | 280 | — | 355 | — | 450 | — | |
| TPA | The first series | 125 | — | 160 | — | 200 | — | 250 | — | 315 | — | 400 | — | 500 |
| Second series | — | 140 | — | 180 | — | 224 | — | 280 | — | 355 | — | 450 | — | |
Note: The first series is preferred. The center distance of the second series in the table only proposes the type specifications.
Nominal transmission ratio of reducer i| Model number | TPG TPU TPS TPA | ||||||||
| Nominal transmission ratio i | 10 | 12.5 | 16 | 20 | 25 | 31.5 | 40 | 50 | 63 |