GTA GTAt Type Cylindrical Linear Motion Bushing

GTA GTAt Type Cylindrical Linear Motion Bushing

GTA GTAt type cylindrical linear motion bushing—a state-of-the-art solution to enhance precision and smoothness in linear motion applications. This innovative product is specifically engineered to provide robust support and minimal friction along linear axes, making it ideal for various industrial and mechanical systems.

The GTA GTAt type cylindrical linear motion bushing is a high-quality product designed to enhance precision and smoothness in linear motion applications. Its robust construction, low-friction operation, precise alignment, and wide range of load capacities provide reliable and efficient linear motion support for various industrial and mechanical systems. By following the recommended usage method and maintenance guidelines, you can optimize the performance and longevity of your linear motion systems, improving productivity and achieving exceptional results. Experience the precision and smoothness of the GTA GTAt Type Cylindrical Linear Motion Bushing today and elevate your linear motion applications to new performance levels.

Characteristics of GTA GTAt Type Cylindrical Linear Motion Bushing:

High-Quality Construction: The GTA GTAt Type Cylindrical Linear Motion Bushing is manufactured with exceptional precision and high-quality materials. Its robust cylindrical design with precise dimensions ensures consistent performance and durability in demanding applications.

Smooth and Low-Friction Operation: This linear motion bushing provides smooth and low-friction movement along linear axes. Its advanced construction minimizes frictional forces, reducing wear and heat generation, resulting in smoother and more efficient linear motion.

Precise Alignment and Stability: The GTA GTAt Type Cylindrical Linear Motion Bushing offers precise alignment and stability in linear motion systems. It ensures accurate positioning and minimizes play or vibration, allowing for reliable and detailed movement in various applications.

Wide Range of Load Capacities: This product has different load capacity options to suit various requirements. Whether you have light-duty or heavy-duty applications, the GTA GTAt Type Cylindrical Linear Motion Bushing provides excellent load-bearing capabilities, ensuring optimal performance and reliability.

Parameter of GTA GTAt Type Cylindrical Linear Motion Bushing:

Notes:

1.4-d2 holes are fixed by socket head cap screw.
2. users specify Size S; please note this in the contract.
3. Special design for open-type rail shaft-bearing base.
4. Rated dynamic load and rated static load should be positive pressure.

Notes:

Dimensions of this product line are the same as those of the general series except for those listed in this table.

Maintenance Guidelines:

To ensure the longevity and consistent performance of the GTA GTAt Type cylindrical linear motion bushing, follow these maintenance guidelines:

Cleanliness: Keep the bushing and surrounding areas clean from dust, dirt, and debris. Regularly wipe the bushing with a soft, lint-free cloth to remove any contaminants that may hinder its smooth operation.

Lubrication Maintenance: Monitor the lubrication levels and reapply lubricant as needed. Follow the manufacturer's guidelines for the appropriate lubricant type and application method. Proper lubrication helps maintain low friction and extends the lifespan of the bushing.

Component Replacement: If the bushing shows signs of significant wear or damage, promptly replace it with a genuine GTA GTAt type cylindrical linear motion bushing from the manufacturer. Using authentic parts ensures compatibility and preserves the performance of your linear motion system.

Configuration and Features:

Configuration

Cylindrical ball building consists of linear motion ball bearing, rail shaft, ball bearing supporting base, shaft supporting base, other parts, and so on. There are two types: closed type and open type. They are both classified according to product structure. The former has two types: clearance-adjustable and clearance-nonadjustable; the latter has only one:clearance-adjustable type. See Fig. 1 GTA type, Fig. 2 GTB type, and Fig.3 GTC type. Therefore GTC, type linear motion bushing is another model of open-type linear motion bushing. The difference of GTC and GTA is different mounting way.It is more flexible than GTA. It can not only save mounting space but also keep relevant accuracy.

When necessary, two more supporting bases for the rail shaft may be fitted with GTA (general series)and GTAt(special series)open type. It is to eliminate the influence caused by deadweight of rail shaft on total height(H)of ball bearing supporting base and motion parallelism. This configuration is especially suitable for specifications of large travel distances, so higher motion accuracy could be achieved.

Two or more supporting bases could not be fitted with these types of ball bushing, such as GTB(general series), GTBt(special series), GTB-t clearance-adjustable(available series), and GTBt-t clearance-nonadjustable(special series). Therefore, the deadweight of the rail shaft will inevitably influence the total height(H) of the bearing supporting base and motion parallelism. Thus, these types are generally used in short travel distances or low motion accuracy occasions.

Characters and Features:

The friction coefficient value is minimal, only 0.001~0.004.Power consumption

Flexible, accurate motion performance in trace amount; no slow crawling.

Self-adjustable structure, so the lower accuracy of supplementary parts could be used.

Lubrication is easy, and maintenance is convenient. Replacing parts can be done promptly.

Motion speed and positioning accuracy are very high, and long travel distances are available.

The rail shaft is made of good-quality alloy steel after quenching HRC58-63, capable of standing wear, stability performance, and accuracy-keeping function.

Accuracy Grade

Accuracy grades are classified into three precision grades (grade J) and common grades (including two kinds: grade P and grade P1)according to the manufacturing accuracy of ball bearings. Permission tolerance values of each grade are shown in Tab 1.

A mate of the rail shaft with an inscribed circle of ball bearing is g6/H7, the same for mounting the external circle with the inner bore of the supporting base.

Different types for different use

Clearance- nonajustable type:GTB, GTBt

Clearance-adjustable type: GTA GTAt GTB-t GTBt-t and GTC

If special requirements are required, please consult with us.

When both are fitted in parallelism on the same surface, if each size H is requested in coherence with the others, please notify your contact.

Code Rules and Connotations:

Code example

GTAt25-2/3 x 1000-P shows that it belongs to an open type, special series. The diameter of the rail shaft is 25mm; one set ball bushing is fitted with two bearing carriers(including bearing)and three supporting bases for the shaft; its total length is 1000mm, and the accuracy grade is P.

GTB40-2x1500-J shows that it belongs to the close type,non-clearance-rectifying type. The diameter of the inscribed circle of the ball bearing and rail shaft is 400mm; a ball bushing is fitted with two sets of linear motion ball bearings, and its total length is 1500mm, and the accuracy grade is J.

Service Life Calculation and Examples:

Rated service life calculation:

Calculation Example

Mounting and Adjustment of Linear Balls Bearing:

Lubrication grease should be smeared in the uncontaminated inside of the bearing.

Proper tooling are used to press on housing washer surface,when press bearing in fit supporting base. As shown in Fig.4, be sure not to knock at the bearing directly to avoid deformation.

Insert rail shaft into bearing gently; centering line should be ensured. Deflecting plugging will likely deform the container and make balls drop. see Fig.5

There is no permission to rotate the bearing when plugging it into the supporting base; forcing rotation will damage the bearing. See Fig.6.

Do not fix the adjusting screw with the housing washer of the bearing directly to avoid deformation. See Fig.7.

Clearance-adjustable(close type)type and the open type, and the clearance-adjustable type should be mounted as shown in Fig.8 and Fig.9; then, tighten the clearance with a screw and pay attention that preload pressure should not be too enormous.

For mounting methods of ball-bearing supporting bases, see Fig.19 and Fig.11.

For standard methods of fixing ball bearings, see Fig.12, Fig.13, and Fig.14.

Range of Application:

Machines and Tools

CNC machine, multi-axial drilling machine, tooling grinding machine, plane grinding machine. Spline grinding machine, broaching machine, pneumatic control spot welding machine, oil press, automatic gas cutting machine, profile cut tracing machine, centerless grinder wheel dresser, etc.

Measuring Device and Control Machine

Omnipotent projector, tooth gear instrumentation, pneumatic control limited gauging, indicator, automated door, precision measuring machine,water level recorder.

Electric Apparatus and Electronics Instrument

Computer and its external devices, automatic recorder for currency, voltage temperature, image pickup device, tap recorder, X, Y arithmometer, digital three-way detector, X-ray device.

Transportation Machine

Transfermatic conveying devices,go-return moving machines, adjustable operating machines, speed indicator, acceleration indicator.

General Working Machine

Movable photo microscope, detecting device,card-choosing machine, imitation machine, typewriter, electronic recording device.

Textile and Fiber Machine

Lifting device for spinning machine frame, cutting muller, automatic reeling machine, automatic yarn twisting machine, and so on.

Others Applicable Occasions

Graph plotter, diagnosis machine bed, game machine, motor base for adjustment, packing machine, printing machine, suppleness control unit, etc.