China supplier Hard Chrome Plating Misumi Linear Propeller Shaft drill screw shaft

Product Description

 

Product Description

Product description

Linear shaft features

Items

Linear shaft

Flexible shaft

Hollow shaft

Material

CK45, SUJ2

CK45

SUJ2

Heat treatment

Induction hardened

Not hardened

Induction hardened

Surface hardness

HRC58±2

HRC15±3

HRC60±2

Surface treated

Hard chrome plated

Hard chrome plated

Hard chrome plated

Precision

h7, g6, h6

h7, g6

h7, g6, h6

Roundness

Max3.0µm

Max3.0µm

Max3.0µm

Straightness

Max5.0µm

Max5.0µm

Max5.0µm

Chrome thickness

20-30µm

30µm

30µm

Roughness

Max1.5µm

Max1.5µm

Max1.5µm

Process machinized

Threading, reduced shaft dia,coaxial holes drilled and tapped, flats-single or multiple, key way, snap ring grooves, radial holes drilled and tapped, chamfering

Linear shaft description

ERSK Linear offers linear shafting in a variety of different options to meet a wide range of customer needs. Available in hardened steel, CK45 material steel, SUJ2 material steel, hollow steel , inch and metric, Simplicity Shafting maintains the ideal surface finish for linear plain bearings and ball bearings.

· CHINAMFG round shafting is available in inch sizes from 3/16″ thru 4″ and metric sizes from 3 mm thru 80 mm

· Machining available CHINAMFG request

High Reliability

ERSK linear shaft has very straight quality control standards covering every production process. With proper lubrication and use, trouble-free operation for an extended period of time is possible.

Smooth Operation

The high efficiency of linear shaft is vastly superior to conventional shaft. The torque required is less than 30%. Linear motion can be easily changed from rotary motion.

High Durability

Rigidly selected materials, intensive heat treating and processing techniques, backed by years of experience,have resulted in the most durable linear shaft manufactured.

Induction linear shaft, Flexible linear shaft,

linear bearings shaft, hollow linear shaft,

hardened linear shaft, chromed linear shaft

Application

For delicate application in industrial application, machine tool and automation application.

Linear Shafts – Technical Properties.

Test linear shaft surface roughness

the max roughness is Ra0.4um

Straight the linear shaft straightness:

We control the traighness 0.05mm of linear shaft 300mm

Test hardness:

S45C materail induction linear shaft, the hardness is HRC55-58

GCr15 (SUJ2) materail induction linear shaft, the hardness is HRC58-63

If flexible shaft, the hardness is based on the shaft material itself

Test the linear shaft dia precision, as usually, h7 is the normal tolerance in our stock, But we can offer g6, h6 precision too. if any special tolerance, we are CZPT to customize them for you.

We can machinize all kinds of machining,

 

Related products

Related products

There are many kinds of products we can offer, If you are interested in them, please click the picture and see the details.

Production Flow

Over service

Over Service

Packaging & Shipping

Packaging and shipping

PP bag for each linear shaft, Standard exported carton outside for small order shipping by international express, such as DHL, TNT, UPS

Wooden box outside for big quantity or very long linear shaft by sea, by air

 

Company Profile

Company information

Our principle

 

Material: Carbon Steel
Load: Drive Shaft
Stiffness & Flexibility: Flexible Shaft
Journal Diameter Dimensional Accuracy: H7, H6, G6
Axis Shape: Straight Shaft
Shaft Shape: Real Axis
Samples:
US$ 3/Meter
1 Meter(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

screw jack

How do screw jacks compare to other methods of lifting and adjusting loads?

When comparing screw jacks to other methods of lifting and adjusting loads, several factors come into consideration. Here’s a comparison of screw jacks with other commonly used methods:

  • Hydraulic Systems: Screw jacks offer several advantages over hydraulic systems:
  • Control and Precision: Screw jacks provide precise control and incremental adjustments. Hydraulic systems, on the other hand, may have limitations in terms of fine-tuning and precise positioning.
  • Self-Locking: Screw jacks have a self-locking feature, which means they can hold positions without the need for continuous hydraulic pressure. Hydraulic systems typically require constant pressure to maintain position, which can be a disadvantage in certain applications.
  • Simplicity and Maintenance: Screw jacks are generally simpler in design and require less maintenance compared to hydraulic systems. Hydraulic systems involve additional components such as pumps, hoses, valves, and hydraulic fluid, which can introduce complexity and maintenance requirements.
  • Load Capacity: Screw jacks are available in a wide range of load capacities, making them suitable for both light-duty and heavy-duty applications. Hydraulic systems can handle higher loads but may be less suitable for precise adjustments in lighter load ranges.
  • Pneumatic Systems: Screw jacks offer several advantages over pneumatic systems:
  • Precision and Control: Screw jacks provide precise and controlled adjustments, allowing for accurate positioning. Pneumatic systems may have limitations in terms of fine-tuning and precise control.
  • Self-Locking: Screw jacks have a self-locking feature, which allows them to hold positions without the need for continuous pneumatic pressure. Pneumatic systems require continuous pressure to maintain position, which can be a drawback in certain applications.
  • Energy Efficiency: Screw jacks are typically more energy-efficient compared to pneumatic systems since they do not require a constant supply of compressed air.
  • Load Capacity: Screw jacks can handle a wide range of load capacities, making them suitable for various applications. Pneumatic systems may have limitations in terms of handling heavy loads.
  • Electric Actuators: Screw jacks offer several advantages over electric actuators:
  • Load Capacity: Screw jacks are capable of handling high loads and are suitable for heavy-duty applications. Electric actuators may have limitations in terms of load capacity.
  • Self-Locking: Screw jacks have a self-locking feature, which allows them to hold positions without the need for continuous electric power. Electric actuators may require continuous power to maintain position.
  • Precision and Control: Screw jacks provide precise control and incremental adjustments. Electric actuators can offer precise positioning but may have limitations in terms of fine-tuning and incremental adjustments.
  • Cost-Effectiveness: Screw jacks are often more cost-effective compared to electric actuators, making them a preferred choice in certain applications.

It’s important to note that the choice between screw jacks and other methods depends on the specific requirements of the application, such as load capacity, precision, control, maintenance, and cost considerations. Each method has its strengths and limitations, and manufacturers and engineers evaluate these factors to determine the most suitable solution for a particular lifting or adjusting task.

screw jack

Can screw jacks be used for both light-duty and heavy-duty applications?

Yes, screw jacks are versatile mechanical devices that can be used for both light-duty and heavy-duty applications. Their design and construction allow them to handle a wide range of loads, making them suitable for various industrial, commercial, and residential tasks. Here’s how screw jacks are used in both light-duty and heavy-duty applications:

  • Light-Duty Applications: Screw jacks find application in numerous light-duty tasks where precise positioning, lifting, or adjustment is required. Examples of light-duty applications include:
  • Workbenches and assembly stations: Screw jacks can be employed to adjust the height of workbenches or assembly stations, allowing operators to work at comfortable levels.
  • Stage and theater equipment: Screw jacks are used to raise or lower stage platforms, lighting fixtures, or props, allowing for easy setup and adjustments during performances.
  • Medical and healthcare equipment: Screw jacks are utilized in medical beds, examination tables, or dental chairs to enable height adjustments for patient comfort and medical procedures.
  • Optical and laboratory equipment: Screw jacks provide precise vertical positioning in optical systems, microscopes, or laboratory setups, ensuring accurate alignment and focus.
  • Residential applications: Screw jacks can be used in home applications, such as adjustable tables, ergonomic furniture, or lifting mechanisms for storage units.
  • Heavy-Duty Applications: Screw jacks are also capable of handling heavy-duty applications that involve substantial loads and demanding conditions. Examples of heavy-duty applications include:
  • Industrial machinery: Screw jacks are utilized in various industrial machinery, including presses, injection molding machines, or material handling equipment, to provide precise control and lifting capabilities.
  • Construction and infrastructure projects: Screw jacks are employed in construction tasks, such as formwork systems, scaffolding, or temporary structures, for lifting, leveling, or supporting heavy loads.
  • Transportation and automotive: Screw jacks find application in automotive lifts, vehicle maintenance equipment, or cargo handling systems, enabling the lifting and positioning of heavy vehicles or loads.
  • Shipbuilding and offshore industries: Screw jacks are used in shipbuilding and offshore applications for tasks such as aligning sections, adjusting propeller pitch, or lifting heavy components during construction or maintenance.
  • Mining and heavy equipment: Screw jacks are utilized in mining machinery, cranes, or heavy equipment for load positioning, maintenance, or stabilization.

It’s important to note that the specific design, size, and load capacity of the screw jack should be matched to the requirements of the application. Manufacturers provide a wide range of screw jack models with varying load capacities, travel distances, and configurations to accommodate both light-duty and heavy-duty applications. Proper selection and installation of the screw jack ensure optimal performance and safety in diverse tasks.

screw jack

Can you explain the basic principle behind the operation of a screw jack?

The basic principle behind the operation of a screw jack is the conversion of rotational motion into linear motion. A screw jack consists of a threaded shaft, known as the screw, and a nut that engages with the screw’s threads. When the screw is rotated, it moves the nut linearly along its threads, resulting in linear displacement. Here are some key points regarding the basic principle of operation for a screw jack:

  • Rotational Motion: The operation of a screw jack begins with the application of rotational motion to the screw. This can be achieved through various means, such as manually turning a handle, using an electric motor, or employing hydraulic or pneumatic systems. The rotational motion is typically applied to the top end of the screw.
  • Threaded Shaft: The screw in a screw jack is a threaded shaft with helical grooves running along its length. The threads can be either square or trapezoidal in shape. The pitch of the screw refers to the distance traveled along the screw’s axis for each complete revolution. The pitch determines the linear displacement achieved per rotation.
  • Nut Engagement: The nut is a component that engages with the screw’s threads. It is typically a cylindrical or rectangular block with a threaded hole that matches the screw’s threads. The nut is free to move linearly along the screw’s length when the screw is rotated.
  • Linear Motion: As the screw is rotated, the nut moves along the screw’s threads, causing linear displacement. The direction and magnitude of the displacement depend on the rotational direction and the pitch of the screw. Clockwise rotation typically results in upward linear displacement, while counterclockwise rotation leads to downward displacement.
  • Mechanical Advantage: One of the advantages of a screw jack is its ability to provide a mechanical advantage. The pitch of the screw determines the distance traveled per revolution. By increasing the pitch or using multiple-start threads, the linear displacement achieved per rotation can be increased, allowing for the lifting or lowering of heavier loads with relatively less rotational effort.
  • Self-Locking: The friction between the screw and the nut helps to maintain the position of the load once the rotational force is removed. This self-locking characteristic of screw jacks allows them to hold loads in position without requiring continuous power or external braking mechanisms.

In summary, the basic principle behind the operation of a screw jack involves the conversion of rotational motion into linear motion. By rotating the screw, the nut moves along the screw’s threads, resulting in linear displacement. The pitch of the screw determines the distance traveled per revolution, and the self-locking nature of the screw and nut interface helps maintain the position of the load.

China supplier Hard Chrome Plating Misumi Linear Propeller Shaft   drill screw shaftChina supplier Hard Chrome Plating Misumi Linear Propeller Shaft   drill screw shaft
editor by CX 2023-11-17

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