Worm gear head SWJMK, SWMK
- General-purpose gear heads for servo applications achieving high economic efficiency and short lead-time.
- The worm gear heads SWJMK and SWMK are right-angle shaft types that enable high strength and quiet operation.
- Output shaft: Hollow
- Compatible servo motors: 0.2 to 7kW
- Reduction ratio: 1/10 to 1/60
Features
-
Economy
We have adapted general-purpose gearheads for servo applications, allowing us to deliver products economically and with Quick delivery.
-
・Low noise and vibration
Unlike other types of gear transmission, the worm gear considerably reduces vibration and noise due to sliding contact.
-
・Longer oil seal life achieved - Adopts a unique new oil seal structure
The new oil seal structure incorporates a filter inside the oil seal, which prevents Wear debris from entering the seal, extending the seal's lifespan.
-
・Space saving
A dedicated case based on flange mounting is used, contributing to the compactness of the entire device.
-
・Output shaft backlash (approximate value)
Unit: minutes size SWJMK35 SWJMK42 SWJMK50 SWJMK63 SWJMK70 SWMK80 SWMK100 angle 40 30 25 20 15 *This is not a guaranteed value.
Catalogs and Instruction Manuals
Model number display example
| SWMK | 100 | T | 40 | LF | - | □□□C |
| ｜ type |
｜ size |
｜ Mounting Position |
｜ Reduction ratio |
｜ Shaft Arrangement |
｜ Mount Code |
|
| See table below | See table below | (clamp type) |
| size | 35～63 | 70 | 80, 100 | ||
|---|---|---|---|---|---|
| Mounting Position | E | E | T | B | V |
| Shaft arrangement |  |
 |
 |
 |
 |
■ Tsubaki model No. navigation
series
EWJMK/EWMK: These are types that are basically Foot mount. Sizes 70 and below are the EWJMK series, and sizes 80 and above are the EWMK series.
SWJMK/SWMK: These are types based on flange mounting and on-shaft mounting. Sizes 70 and below are the SWJMK series, and sizes 80 and above are the SWMK series.
size
Indicates the size of the reducer.
Mounting Position
E or T: E for EWJMK and SWJMK series,
For the EWMK and SWMK series, it is T.
E can be installed in all directions, and T is a type where the input shaft is above the output shaft.
B: This type has the input shaft lower than the output shaft.
V: A type in which the output shaft is vertical.
Please refer to the diagram below for details.
Reduction ratio
Indicates the reduction ratio.
Shaft arrangement
Indicates the relationship between the mounting surface and the input/output shaft.
Please refer to the diagram below for details.
Mount Code
Specify the mount code that matches the motor you are installing.
Product List
*Click on the model number to display detailed information. Open all Close all
Size 35 (Model number SWJMK35~)
| Mount Code | Reduction ratio | E-type |
|---|---|---|
|
Lower motor mount |
1/10 | SWJMK35E10DF |
| 1/15 | SWJMK35E15DF | |
| 1/20 | SWJMK35E20DF | |
| 1/25 | SWJMK35E25DF | |
| 1/30 | SWJMK35E30DF | |
| 1/40 | SWJMK35E40DF | |
| 1/50 | SWJMK35E50DF | |
| 1/60 | SWJMK35E60DF |
Size 42 (Model number SWJMK42~)
| Mount Code | Reduction ratio | E-type |
|---|---|---|
|
Lower motor mount |
1/10 | SWJMK42E10DF |
| 1/15 | SWJMK42E15DF | |
| 1/20 | SWJMK42E20DF | |
| 1/25 | SWJMK42E25DF | |
| 1/30 | SWJMK42E30DF | |
| 1/40 | SWJMK42E40DF | |
| 1/50 | SWJMK42E50DF | |
| 1/60 | SWJMK42E60DF |
Size 50 (Model number SWJMK50~)
| Mount Code | Reduction ratio | E-type |
|---|---|---|
|
Lower motor mount |
1/10 | SWJMK50E10DF |
| 1/15 | SWJMK50E15DF | |
| 1/20 | SWJMK50E20DF | |
| 1/25 | SWJMK50E25DF | |
| 1/30 | SWJMK50E30DF | |
| 1/40 | SWJMK50E40DF | |
| 1/50 | SWJMK50E50DF | |
| 1/60 | SWJMK50E60DF |
Size 63 (Model number SWJMK63~)
| Mount Code | Reduction ratio | E-type |
|---|---|---|
|
(SWJMK only) Lower motor mount |
1/10 | SWJMK63E10DF |
| 1/15 | SWJMK63E15DF | |
| 1/20 | SWJMK63E20DF | |
| 1/25 | SWJMK63E25DF | |
| 1/30 | SWJMK63E30DF | |
| 1/40 | SWJMK63E40DF | |
| 1/50 | SWJMK63E50DF | |
| 1/60 | SWJMK63E60DF |
Size 70 (Model number SWJMK70~)
| Mount Code | Reduction ratio | E-type |
|---|---|---|
|
(SWJMK only) (SWJMK only) Lower motor mount |
1/10 | SWJMK70E10LF SWJMK70E10RF |
| 1/15 | SWJMK70E15LF SWJMK70E15RF |
|
| 1/20 | SWJMK70E20LF SWJMK70E20RF |
|
| 1/25 | SWJMK70E25LF SWJMK70E25RF |
|
| 1/30 | SWJMK70E30LF SWJMK70E30RF |
|
| 1/40 | SWJMK70E40LF SWJMK70E40RF |
|
| 1/50 | SWJMK70E50LF SWJMK70E50RF |
|
| 1/60 | SWJMK70E60LF SWJMK70E60RF |
Size 80 (Model number SWMK80 and later)
| Mount Code | Reduction ratio | T type | Type B | V-type |
|---|---|---|---|---|
|
Lower motor mount |
1/10 | SWMK80T10LF SWMK80T10RF |
SWMK80B10LF SWMK80B10RF |
SWMK80V10LF SWMK80V10RF |
| 1/15 | SWMK80T15LF SWMK80T15RF |
SWMK80B15LF SWMK80B15RF |
SWMK80V15LF SWMK80V15RF |
|
| 1/20 | SWMK80T20LF SWMK80T20RF |
SWMK80B20LF SWMK80B20RF |
SWMK80V20LF SWMK80V20RF |
|
| 1/25 | SWMK80T25LF SWMK80T25RF |
SWMK80B25LF SWMK80B25RF |
SWMK80V25LF SWMK80V25RF |
|
| 1/30 | SWMK80T30LF SWMK80T30RF |
SWMK80B30LF SWMK80B30RF |
SWMK80V30LF SWMK80V30RF |
|
| 1/40 | SWMK80T40LF SWMK80T40RF |
SWMK80B40LF SWMK80B40RF |
SWMK80V40LF SWMK80V40RF |
|
| 1/50 | SWMK80T50LF SWMK80T50RF |
SWMK80B50LF SWMK80B50RF |
SWMK80V50LF SWMK80V50RF |
|
| 1/60 | SWMK80T60LF SWMK80T60RF |
SWMK80B60LF SWMK80B60RF |
SWMK80V60LF SWMK80V60RF |
Size 100 (Model number SWMK100 and later)
| Mount Code | Reduction ratio | T type | Type B | V-type |
|---|---|---|---|---|
|
Lower motor mount |
1/10 | SWMK100T10LF SWMK100T10RF |
SWMK100B10LF SWMK100B10RF |
SWMK100V10LF SWMK100V10RF |
| 1/15 | SWMK100T15LF SWMK100T15RF |
SWMK100B15LF SWMK100B15RF |
SWMK100V15LF SWMK100V15RF |
|
| 1/20 | SWMK100T20LF SWMK100T20RF |
SWMK100B20LF SWMK100B20RF |
SWMK100V20LF SWMK100V20RF |
|
| 1/25 | SWMK100T25LF SWMK100T25RF |
SWMK100B25LF SWMK100B25RF |
SWMK100V25LF SWMK100V25RF |
|
| 1/30 | SWMK100T30LF SWMK100T30RF |
SWMK100B30LF SWMK100B30RF |
SWMK100V30LF SWMK100V30RF |
|
| 1/40 | SWMK100T40LF SWMK100T40RF |
SWMK100B40LF SWMK100B40RF |
SWMK100V40LF SWMK100V40RF |
|
| 1/50 | SWMK100T50LF SWMK100T50RF |
SWMK100B50LF SWMK100B50RF |
SWMK100V50LF SWMK100V50RF |
|
| 1/60 | SWMK100T60LF SWMK100T60RF |
SWMK100B60LF SWMK100B60RF |
SWMK100V60LF SWMK100V60RF |
Motor mount dimension diagram
Unit: mm
| size | Mount Code By motor manufacturer Compatibility list |
Coupling | Motor mount dimensions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Model number | Allowable Torque N・m |
MA | MB | MC | MD | ME | ML | MS | MT | ||
| SWJMK35 | E4DC | NES70W | 7 | □60 | Φ50G7 | M5 depth 10 (PCD70) |
5 | 80 | 25 | Φ8 | M3 |
| E4HC | 30 | Φ14 | |||||||||
| SWJMK42 | E4DC | NES70W | 7 | □60 | Φ50G7 | M5 depth 10 (PCD70) |
5 | 80 | 25 | Φ8 | M3 |
| E4HC | 30 | Φ14 | |||||||||
| SWJMK50 | G2HC | NES250W | 25 | □80 | Φ70G7 | M6 depth 10 (PCD90) |
5 | 100 | 30 | Φ14 | M4 |
| G5LC | 40 | Φ19 | |||||||||
| SWJMK63 | G2HC (SWJMK only) |
NES250W | 25 | □80 | Φ70G7 | M6 depth 10 (PCD90) |
5 | --- | 30 | Φ14 | M4 |
| G5LC | 40 | Φ19 | |||||||||
| K2LC | NES800W | 80 | □130 | Φ110G7 | M8 depth 13 (PCD145) |
8 | --- | 40 | Φ19 | M6 | |
| K3YC | 55 | Φ24 | |||||||||
| L1MC | NES1300W | 130 | □176 | Φ114.3G7 | M12 depth 16 (PCD200) |
8 | --- | 55 | Φ22 | M6 | |
| L1PC | 55 | Φ28 | |||||||||
| L1RC | 79 | Φ35 | |||||||||
| SWJMK70 | G2HC (SWJMK only) |
NES250W | 25 | □80 | Φ70G7 | M6 depth 10 (PCD90) |
5 | --- | 30 | Φ14 | M4 |
| G5LC (SWJMK only) |
40 | Φ19 | |||||||||
| K2LC | NES800W | 80 | □130 | Φ110G7 | M8 depth 13 (PCD145) |
8 | --- | 40 | Φ19 | M6 | |
| K3YC | 55 | Φ24 | |||||||||
| L1MC | NES1300W | 130 | □176 | Φ114.3G7 | M12 depth 16 (PCD200) |
8 | --- | 55 | Φ22 | M6 | |
| L1PC | 55 | Φ28 | |||||||||
| L1RC | 79 | Φ35 | |||||||||
| SWMK80 | K2LC | NES800W | 80 | □130 | Φ110G7 | M8 depth 13 (PCD145) |
8 | --- | 40 | Φ19 | M6 |
| K3YC | 55 | Φ24 | |||||||||
| L1MC | NES1300W | 130 | □176 | Φ114.3G7 | M12 depth 16 (PCD200) |
8 | --- | 55 | Φ22 | M6 | |
| L1PC | 55 | Φ28 | |||||||||
| L1RC | 79 | Φ35 | |||||||||
| SWMK100 | L1MC | NES1300W | 130 | □176 | Φ114.3G7 | M12 depth 16 (PCD200) |
8 | --- | 55 | Φ22 | M6 |
| L1PC | 55 | Φ28 | |||||||||
| L1RC | 79 | Φ35 | |||||||||
