GTB GTBt GTBt-t Type Linear Motion Bushing

GTB GTBt GTBt-t Type Linear Motion Bushing 

GTB GTBt GTBt-t type linear motion bushing is an innovative solution to enhance precision and performance in linear motion systems. This versatile product is specifically engineered to provide smooth and reliable movement along linear axes, making it an ideal choice for various industrial and mechanical applications.The GTB GTBt GTBt-t type linear motion bushing is a high-quality product designed to enhance precision and performance in linear motion systems. With its high-quality construction, smooth operation, wide load capacities, and precision alignment, this bushing provides reliable and efficient linear motion support for various industrial and mechanical applications. 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 performance of the GTB GTBt GTBt-t type linear motion bushing today and elevate your linear motion applications to new levels of excellence.

Characteristics of GTB GTBt GTBt-t Type Linear Motion Bushing:

High-Quality Construction: The GTB GTBt GTBt-t type linear motion bushing is meticulously engineered with high-quality materials to ensure durability and longevity. Its robust design and precise dimensions contribute to exceptional performance and reliability 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 and resulting in smooth and efficient linear motion.Wide Range of Load Capacities: The GTB GTBt GTBt-t type linear motion bushing has various load capacity options to accommodate different application requirements. Whether you have light-duty or heavy-duty applications, this bushing offers excellent load-bearing capabilities, ensuring optimal performance and reliability.Precision Alignment and Stability: This linear motion bushing ensures precise alignment and stability in linear motion systems. It minimizes play, vibration, and unwanted movement, allowing for accurate and reliable positioning in diverse applications.

Parameter of GTB GTBt GTBt-t Type Linear Motion Bushing:

Notes:1. Size listed in the table for the GTB-t type are the same as those of the GTB type.2.4-d2 holes are fixed by socket head cap screw.3. Rated dynamic load and rated static load should be positive pressure.

Notes:

(1)Dimensions of this product line are the same as those of the general series except for those listed in this table.(2)Sizes listed in the table for GTBt-t are the same as those of GTBt type.

Maintenance Guidelines:

To ensure the longevity and consistent performance of the GTB GTBt GTBt-t type linear motion bushing, follow these maintenance guidelines:Regular Cleaning: Periodically clean the bushing to remove dust, dirt, or debris that may impair its performance. Use a soft brush or cloth to gently clean the surface and components, ensuring smooth and reliable operation.Lubrication Maintenance: Monitor the lubrication levels and reapply the lubricant as needed. Follow the manufacturer's guidelines for the appropriate lubricant type and application method. Regular lubrication minimizes friction, reduces wear, and extends the lifespan of the bushing.Inspection and Replacement: Regularly inspect the linear motion bushing for signs of wear, misalignment, or damage. Check for any abnormalities during the operation. If significant wear or damage is detected, promptly replace the bushing with a genuine GTB GTBt GTBt-t type linear motion bushing from the manufacturer to maintain optimal performance.

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 consumptionFlexible, 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 useClearance- nonajustable type:GTB, GTBtClearance-adjustable type: GTA GTAt GTB-t GTBt-t and GTCIf 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 exampleGTAt25-2/3 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 ToolsCNC 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 MachineOmnipotent projector, tooth gear instrumentation, pneumatic control limited gauging, indicator, automated door, precision measuring machine,water level recorder.Electric Apparatus and Electronics InstrumentComputer 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 MachineTransfermatic conveying devices,go-return moving machines, adjustable operating machines, speed indicator, acceleration indicator.General Working MachineMovable photo microscope, detecting device,card-choosing machine, imitation machine, typewriter, electronic recording device.Textile and Fiber MachineLifting device for spinning machine frame, cutting muller, automatic reeling machine, automatic yarn twisting machine, and so on.Others Applicable OccasionsGraph plotter, diagnosis machine bed, game machine, motor base for adjustment, packing machine, printing machine, suppleness control unit, etc.