GLW024K-GLW065K
GLW024K-GLW065K Quarter-turn Manual Worm Gearbox Series
GLW024K-GLW065K is organized as one product page group from source sheet GLW-08, with actual model variants preserved separately.
GLW024K-GLW065K Quarter-turn Manual Worm Gearbox Series
GLW024K-GLW065K is a high torque manual valve gearbox series. It provides quarter turn operation with worm gear transmission. Designed for large valve manual gear operators, it features an ISO 5211 valve gearbox interface.
The GLW024K-GLW065K series transmits output torque ranging from 24000 to 65000 Nm via a worm gear transmission. This manual quarter turn gearbox features an ISO 5211 valve gearbox interface for direct mounting on large butterfly, ball, plug valves, and dampers. The worm gear operator provides self-locking function and precise torque control. The top-mounted design supports valve automation and actuator mounting.
Performance Parameters
Units: torque N·m · thrust kN · linear dimensions mm
| Model | Out. Tq. | In. Tq. | Ratio | Eff. |
|---|---|---|---|---|
| GLW024K | 24000 | 90 | 1198:1 | 265.9 |
| GLW029K | 29000 | 100 | 1276:1 | 293.5 |
| GLW036K | 36000 | 81 | 1926:1 | 443 |
| GLW042K | 42000 | 81 | 2251:1 | 517.7 |
| GLW053K | 53000 | 95 | 2446:1 | 562.6 |
| GLW065K | 65000 | 96 | 2957:1 | 680.1 |
Connection Dimensions
Unit: mm
| Model | Flange No. | D | D0 | PCD Thread | Boss D | Pin Qty | f | Max. Stem Dia. d | H2 | HW Ø |
|---|---|---|---|---|---|---|---|---|---|---|
| GLW024K | F25/F30/F35 | 415/415/415 | 254/298/356 | 8×M16-24/8×M20-30/8×M30-45 | 200/230/260 | 4-Φ20/4-Φ20/4-Φ30 | 5/5/5 | 120 | 179 | 600 |
| GLW029K | F30/F35 | 415/415 | 298/356 | 8×M20-30/8×M30-45 | 230/260 | 4-Φ20/4-Φ30 | 5/5 | 130 | 179 | 600 |
| GLW036K | F35/F40 | 475/475 | 356/406 | 8×M30-45/8×M36-54 | 260/300 | 4-Φ30/4-Φ40 | 5/8 | 150 | 195 | 600 |
| GLW042K | F35/F40/F48 | 560/560/560 | 356/406/483 | 8×M30-45/8×M36-54/12×M36-54 | 260/300/370 | 4-Φ30/4-Φ40/4-Φ40 | 5/8/8 | 170 | 205 | 600 |
| GLW053K | F35/F40/F48 | 560/560/560 | 356/406/483 | 8×M30-45/8×M36-54/12×M36-54 | 260/300/370 | 4-Φ30/4-Φ40/4-Φ40 | 5/8/8 | 180 | 225 | 600 |
| GLW065K | F35/F40/F48 | 560/560/560 | 356/406/483 | 8×M30-45/8×M36-54/12×M36-54 | 260/300/370 | 4-Φ30/4-Φ40/4-Φ40 | 5/8/8 | 180 | 235 | 600 |
Overall Dimensions
Unit: mm · Weight: kg
| Model | A | B | C | L | L1 | H | H1 | H3 | G | L2 | H4 | E | K |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GLW024K | 300/350/415 | 406/449.5/482 | 350.5/382/382 | 494/586.5/619 | 24 | 173.5/187/187 | 85/100/100 | 167.5/187.5/187.5 | 87.5 | 344/412/412 | 55 | 20 | 6 |
| GLW029K | 350/415 | 466.5/499 | 404/404 | 586.5/619 | 24 | 204 | 100 | 187.5 | 87.5 | 412 | 55 | 20 | 6 |
| GLW036K | 415/475 | 551.5/581.5 | 465/465 | 644.5/674.5 | 24 | 239 | 110 | 215 | 97.5 | 437 | 55 | 20 | 6 |
| GLW042K | 415/475/560 | 569.5/599.5/642 | 503/503/503 | 679.5/709.5/752 | 24 | 257 | 130 | 235 | 97.5 | 472 | 140 | 20 | 6 |
| GLW053K | 415/475/535 | 587.5/617.5/660 | 541/541/541 | 684.5/714.5/757 | 24 | 275 | 130 | 235 | 97.5 | 477 | 140 | 20 | 6 |
| GLW065K | 415/475/560 | 599.5/629.5/672 | 553/553/553 | 734.5/764.5/807 | 24 | 287 | 130 | 235 | 97.5 | 477 | 140 | 20 | 6 |
Dimensional Drawing
Product Structure View
Engineering Material List
| No. | Part Name | Material | UK Standard | USA Standard |
|---|---|---|---|---|
| 1 | Worm Gearcase | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
| 2 | Alloy Bushing | SF-1 | SF-1 | SF-1 |
| 3 | Thrust Bearing | Steel | BS 535A99 | AISI/SAE 52100 |
| 4 | Worm Shaft | Steel | BS 080A47 | AISI/SAE 1045 |
| 5 | Worm | Steel | BS 970 530M40 | AISI/SAE 5140 |
| 6 | End Cap | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
| 7 | Turbine | Ductile Iron | BS 2789 600/3 | ASTM A536 80-55-06 |
| 8 | Cover | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
| 9 | Position Indicator Gasket | Nitrile rubber | Nitrile rubber | Nitrile rubber |
| 10 | Position Indicator | Steel | BS 080A25 | AISI/SAE 1025 |
| 11 | Handwheel | Steel | BS 080A25 | AISI/SAE 1025 |
| 12 | Lock Plate | Steel | BS 080A25 | AISI/SAE 1025 |
| 13 | Lock Latch | Steel | BS 080A25 | AISI/SAE 1025 |
| 14 | Reducer Gear Case Cover | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
| 15 | Gear | Steel | BS 970 530M40 | AISI/SAE 5140 |
| 16 | Reducer Main Shaft Gear | Steel | BS 970 530M40 | AISI/SAE 5140 |
| 17 | Reducer Gearcase | Ductile Iron | BS 2789 450/10 | ASTM A536 65-45-12 |
Compatibility & Actuator Interface
Structured gearbox data for engineering selection and project documentation.
TFC provides engineered gearbox solutions for demanding valve applications, with technical support for model selection, torque matching, project documentation and OEM requirements.
Frequently Asked Questions
What is the torque range of the GLW024K-GLW065K gearbox?
The torque range is 24000 to 65000 Nm for the GLW024K-GLW065K series.
Does the gearbox support ISO 5211 valve gearbox interface?
It includes an ISO 5211 flange interface for direct valve mounting.
Which valve types are compatible with this manual gearbox?
Yes, it is designed for quarter turn operation on butterfly, ball, plug valves, and dampers.
Does the worm gearbox include a self-locking feature?
The worm gear transmission provides a self-locking function for secure valve positioning.
Is the gearbox suitable for electric actuator mounting?
The gearbox is top-mounted and supports actuator mounting for valve automation.
Need engineering assistance?
Send us your valve type, required torque, stem dimensions, flange standard and working conditions. Our engineering team will recommend a suitable gearbox model.