Product Description
Description
HDM De-clutchable wormgear offers simple and reliable manual positioning of the valves, dampers and other quarter-turn devices when overriding existing pneumatic, electric or hydraulic quarter-turn actuators. All unit are suitable for both indoor and outdoor installation. The modular design is to provide the most efficient and effective solution to a full range of manual overriding requirements.
Main Product features
To engage manual operation, first pull out the lock handle and then rotate the clutch lever in anti-clockwise direction until engagement takes place. To return to automatic mode, first pull out the lock handle and then rotate the clutch lever in clockwise.
Remark:The bottom center of the HDM-4 is either F10/F14 or F10/F12
| New Manual Override | Countershaft | Valve Connection | Actuator Connection | ||||||||||
| b1 | N | b2 | M | D1 | 4-M1 | D2 | 4-M2 | E | D3 | 4-Φ1 | D4 | 4-Φ2 | |
| HDM-1 | 14 | 22 | 14 | 16 | Φ50 | 4-M6 | Φ70 | 4-M8 | 70*70 | Φ50 | 4-Φ6.5 | Φ70 | 4-Φ8.5 |
| HDM-2 | 17 | 22 | 17 | 18 | Φ70 | 4-M8 | Φ102 | 4-M10 | 95*95 | Φ70 | 4-Φ8.5 | Φ102 | 4-Φ10.5 |
| HDM-3 | 22 | 28 | 22 | 22 | Φ102 | 4-M10 | Φ125 | 4-M12 | 114*114 | Φ102 | 4-Φ10.5 | Φ125 | 4-Φ12.5 |
| HDM-4 | 27 | 32 | 27 | 30 | Φ102 | 4-M10 | Φ125 | 4-M12 | 129*129 | Φ125 | 4-Φ12.5 | Φ140 | 4-Φ16.5 |
| HDM-5 | 36 | 45 | 36 | 38 | Φ140 | 4-M16 | / | / | 156*156 | Φ140 | 4-Φ17 | Φ165 | 4-Φ21 |
| HDM-6 | 46 | 50 | 46 | 48 | Φ165 | 4-M20 | / | / | 160*160 | Φ165 | 4-Φ22 | / | / |
| New Manual Override | A | B | ΦC | F | T | Y | H | S | K | Ratio | Rated Input | Rated Onput |
| HDM-1 | 90 | 55 | Φ88 | 115 | 44 | 145 | 120 | 53 | 10 | 26:1 | Nm | 250Nm |
| HDM-2 | 125 | 64 | Φ110 | 135 | 62.5 | 178 | 133 | 56.5 | 13 | 28:1 | Nm | 450Nm |
| HDM-3 | 140 | 71 | Φ129 | 166 | 70 | 212 | 180 | 68.7 | 12.5 | 38:1 | Nm | 700Nm |
| HDM-4 | 188.5 | 93 | Φ174 | 202 | 94 | 280 | 195 | 84 | 15 | 54:1 | Nm | 1200Nm |
| HDM-5 | 222 | 110 | Φ205 | 245 | 110 | 315 | 225 | 92 | 15 | 80:1 | Nm | 2000Nm |
| HDM-6 | 252 | 120 | Φ275 | 280 | 125 | 320 | 252 | 102 | 15 | 78:1 | Nm | 3000Nm |
1. Question:What is your main products?
Answer:Our main products are Pneumatic Actuators, Electric Actuators, Actuated Valves And Valve actuators Accessories..
2. Question:Are you a trader or manufacturer ?
Answer: We are the pneumatic actuators and electric actuators manufacturer , we have ability to do the customization products with experienced team, And we have own factory and production line.
3. Question:How do your make the quality guarantee for actuators?
Answer:We have our own quality control system for incoming and outgoing of the materials, every product will be under controlled and tested before delivery to our customer , and we also provide 18 months guarantee ,beside we provide technical supporting .
4. Question:When can I receive the Price of valve actuators ?
Answer:We will give the Quotation Within 24 hours after we get your inquiry .Or Your can call or message us if it’s quite urgently.
5. Question:How to order our pneumatic actuators and electric actuators ?
Answer:Please send us your inquiry by Email, , etc. we need to know the following informations before giving the formal Quotation.
1) Product information in details, Quantity, Other requirements
2) Delivery time required
6. Question:How can I get a sample to check your quality?
Answer:Contact with our sales expert to arrange the sample delivery. Please send us the details of the sample before placing the order.
7. Question:Shall we pay the sample cost and transportation cost ?
Answer:We will provide the sample by free of charge. Your will bear the freight cost.
8. Question:How long to prepare the sample ?
Answer:Most of our products are under regular production and some of them we keep in stocks.
9. Question:How to delivery the sample to our place?
Answer:Your can provide your forwarders contacts if any, or we will arrange it for you.
10. Question:What about the delivery date if we place the formal order ?
Answer:Usually it takes 15~20days on the production .We know that on-time delivery is very crucial to our customers to meet dead-lines.
We monitor and expedite our supply chain to ensure that we delivery our products to our customers on-time all the time. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Installation: | Manual |
|---|---|
| Type: | Worm Gear Box |
| Shaft Material: | 45#Steel |
| Worm Material: | Qt400 |
| Transport Package: | Foam and Carton Box |
| Trademark: | Hearken |
| Samples: |
US$ 50/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Self-Locking Properties in a Worm Gearbox
Yes, worm gearboxes exhibit self-locking properties, which can be advantageous in certain applications. Self-locking refers to the ability of a mechanism to prevent the transmission of motion from the output shaft back to the input shaft when the system is at rest. Worm gearboxes inherently possess self-locking properties due to the unique design of the worm gear and worm wheel.
The self-locking behavior arises from the angle of the helix on the worm shaft. In a properly designed worm gearbox, the helix angle of the worm is such that it creates a mechanical advantage that resists reverse motion. When the gearbox is not actively driven, the friction between the worm threads and the worm wheel teeth creates a locking effect.
This self-locking feature makes worm gearboxes particularly useful in applications where holding a load in position without external power is necessary. For instance, they are commonly used in situations where there’s a need to prevent a mechanism from backdriving, such as in conveyor systems, hoists, and jacks.
However, it’s important to note that while self-locking properties can be beneficial, they also introduce some challenges. The high friction between the worm gear and worm wheel during self-locking can lead to higher wear and heat generation. Additionally, the self-locking effect can reduce the efficiency of the gearbox when it’s actively transmitting motion.
When considering the use of a worm gearbox for a specific application, it’s crucial to carefully analyze the balance between self-locking capabilities and other performance factors to ensure optimal operation.
Worm Gearboxes in Conveyor Systems: Benefits and Considerations
Worm gearboxes play a crucial role in conveyor systems, offering several benefits and considerations for their effective integration:
- Space Efficiency: Worm gearboxes have a compact design, making them suitable for applications with limited space, such as conveyor systems.
- High Reduction Ratios: Worm gearboxes can achieve high reduction ratios in a single stage, allowing for slower conveyor speeds without sacrificing torque.
- Self-Locking: Worm gearboxes have inherent self-locking properties, preventing the conveyor from moving when the motor is not actively driving it.
- Directional Control: Worm gearboxes facilitate directional control, enabling the conveyor to move forward or reverse as needed.
- Low Noise: Worm gearboxes often produce lower noise levels compared to other gearbox types, contributing to quieter conveyor operation.
However, there are also considerations to keep in mind when using worm gearboxes in conveyor systems:
- Efficiency: Worm gearboxes may have lower mechanical efficiency compared to some other gearbox types, leading to energy losses.
- Heat Generation: Worm gearboxes can generate more heat due to sliding contact between the worm and gear, necessitating proper cooling mechanisms.
- Lubrication: Proper lubrication is critical to prevent wear and ensure efficient operation. Regular maintenance is required to monitor lubrication levels.
- Load and Speed: Worm gearboxes are well-suited for applications with high torque and low to moderate speed requirements. They may not be optimal for high-speed conveyors.
Before integrating a worm gearbox into a conveyor system, it’s important to carefully consider the specific requirements of the application, including load, speed, space constraints, and efficiency needs. Consulting with gearbox experts and manufacturers can help ensure the right choice for the conveyor’s performance and longevity.
Types of Worm Gear Configurations and Their Uses
Worm gear configurations vary based on the arrangement of the worm and the gear it engages with. Here are common types and their applications:
- Single Enveloping Worm Gear: This configuration offers high torque transmission and efficiency. It’s used in heavy-duty applications like mining equipment and industrial machinery.
- Double Enveloping Worm Gear: With increased contact area, this type provides higher load capacity and improved efficiency. It’s used in aerospace applications, robotics, and precision machinery.
- Non-Throated Worm Gear: This type has a cylindrical worm without a throat. It’s suitable for applications requiring precise motion control, such as CNC machines and robotics.
- Throated Worm Gear: Featuring a throat in the worm, this configuration offers smooth engagement and higher load capacity. It’s used in conveyors, elevators, and automotive applications.
- Non-Modular Worm Gear: In this design, the worm and gear are a matched set, resulting in better meshing and efficiency. It’s utilized in various industries where customization is essential.
- Modular Worm Gear: This type allows interchangeability of worm and gear components, providing flexibility in design and maintenance. It’s commonly used in conveyors, mixers, and material handling systems.
Selecting the appropriate worm gear configuration depends on factors such as load capacity, efficiency, precision, and application requirements. Consulting gearbox experts can help determine the best configuration for your specific needs.
editor by CX 2024-03-28
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