GGD Heavy Load Radial Linear Guideway

GGD Heavy Load Radial Linear Guideway

The GGD heavy-load radial linear guideway is an advanced linear motion system that delivers exceptional performance in heavy-duty industrial applications. With its robust construction and precise engineering, this product is the perfect solution for industries that require high load-bearing capabilities combined with precise linear motion.The GGD heavy-load radial linear guideway offers unmatched power, precision, and reliability in heavy-duty industrial applications. Its high load capacity, radial motion capability, and low friction design provide the stability and accuracy required for demanding industrial environments. By following the recommended usage methods and maintenance guidelines, users can maximize the performance and longevity of this advanced linear guideway, making it an essential component for their heavy-load applications.

Structure and Feature:

Structure

GGD series heavy load radial linear guideway with ball carriage consists of rail, block, ball,re-circulator, top, seal, side seal, ball carriage, end seal, and oil cup or oil tube, etc.(see fig-1)

Feature

Radial heavy load, High rigidity, Small volume1. The radial force angle of the GGD guide is perpendicularly downward, significantly improving the radial loading capacity; see Fig. 2.2. Improve the fitness between the raceway and balls, enhancing each raceway's loading capacity and rigidity; see Fig. 3.3. It reduces the dimension of assembly height and optimizes with finite element analysis; mutual force points of 4-row are reduced to the best, enhancing the torsional capacity of rail and deformation capacity of the block and saving the design space for users.GGD rail deformation and stress distribution fig. under torsion, GGD block deformation and stress distribution fig. under force, See fig-4.4. The related formula among radial load rating,anti-radial load rating, and axial load rating, see tab-1low noiseUse ball carriage among the balls, avoid the internal collision, reduce the noise caused by collision among the balls and move more smoothly.For ball contacts, see fig-5; for noise data comparisons, see fig-6.High speed and accuracyBall carriage avoids the friction of balls and dramatically reduces the friction variation; it also comes into being oil film contact between ball and carriage, reduces the heat during running, and achieves high speed and precision movement.Long term maintenance-freeA certain amount of grease in the ball carriage can achieve long-term maintenance and prolong life. See fig-7.

Seal Type:

Preload Class and Application(see tab-2):

Code Rule and Definition:

Usage Method of Linear Guideway:

Installation: To install the GGD Heavy Load Radial Linear Guideway, securely mount it onto the machine frame or base using appropriate fasteners and alignment methods. Ensure proper alignment and parallelism with other machine components for optimal performance.Lubrication: Apply the recommended lubricant to the guideway's bearing surfaces. Proper lubrication is essential for reducing friction, extending the product's lifespan, and ensuring smooth and reliable linear motion. Follow the manufacturer's guidelines regarding lubrication intervals and the appropriate type of lubricant.Load Distribution: When applying heavy loads to the linear guideway, distribute the weight evenly across the contact surfaces to prevent excessive stress on specific areas. This ensures optimal load-bearing performance and prolongs the product's lifespan.Motion Control: Utilize compatible motion control systems, such as servo motors or hydraulic actuators, to drive the GGD Heavy Load Radial Linear Guideway. Ensure proper alignment and synchronization between the driving mechanism and the guideway for accurate and synchronized linear motion.

Accuracy of Linear Guideway:

Because of the error homogenization effect of the linear guideways, when two or more sets of linear guideways are used on the same surface, higher moving accuracy can be attained even using lower mounting accuracy. Usually, product quality can be improved by 20%~50%. Accuracy grades are recommended for all kinds of machine tools and machinery equipment. See Tab-1The accuracy and inspection method is according to the machinery industry standard of the People's Republic of China JB/T715.4-2006<Rolling linear guide: Acceptance Specification>, equal to the foreign competitor's standard.Accuracy grade is classified as six grades:i.e.1,2,3,4,5 and 6. Grade 1 is the highest accuracy, and accuracy grades go down step by step. For testing items and permission tolerance, see tab.2(those shown in the table below indicate GGB type; others refer to GGB)Notes:1. The rail raceway is finished by fixing the rail with bolts on a particular fixture during grinding. The curve will possibly occur in a free state. So, the rail should be set on a unique table to measure and inspect.2. When some blocks exceed two, testing items of both No.4 and No.5 are unnecessary for middle blocks, but the value W1 of medium blocks should be less than that of both ends.

Operating Instructions of Linear Guideway:

Accuracy requirements for the mounting surface of essential parts of the linear guideway.

The plane accuracy of the mounting surface for a single linear guideway can be a little less than operation accuracy.The accuracy of mounting surface for two sets or over two sets of linear guideways on the same surface can be lower than operation accuracy, the recommended accuracy shown in the table below.

Configuration of connecting datum plane of linear guideway

Shoulder height and chamfer type for mounting datum plane

When fixing the block and rail on the machine body and worktable, the chamfer of the block and rail should be machined as value r, which is shown in Tab.10 respectively, or the machine should be grooved to keep the chamfers of rails and block not contact the basic parts.

Mounting And Adjustment Of Linear Guideway:

Mounting methods and operating instructionMove the LMG gently enough not to damage its linear accuracy. There is no permission to separate blocks from rail or push them back when they exceed the travel distance limit. When it is challenging to assemble, the block should be taken down, and a guiding guide should be used, which you can order from our company (Guiding-guide is a kind of subsidiary tool, and its size is smaller than the guide's. When necessary, join the guide with the guide, then push the block from the rail to the guide. After fixing the rail, return the block to the rail from the guiding one again. Pay attention to ref. direction.）Mounting attentionFirst, distinguish the master and subsidiary linear guideway correctly; the arrow directs to the ref. The side of the block is polished. （see Fig-5）

Then make certain the ref. Side when fixing LMGProcedure of rail installation(see Fig-7) Mounting methods of master guide(two methods shown below):<1>.Use the U-type collet to tighten the side datum plane of the rail and bed, then tighten the mounting bolts(mated screw thread recommended）in sequence with the specified torque. (refer to Fig-8）<2>. When there is no bed, fix one end of the linear guideway and use a dial gauge and a straight edge to confirm the straightness of the side datum plane of the rail from one end to the other. Tighten the mounting bolts in sequence. Mounting methods of subsidiary LMG:As shown in fig-10, fix the magnet watch based on the block of the master guide, the pointer of dial gauge contacts on the side datum surface of the subsidiary guide, read the parallelism from one end, and tighten the subsidiary guide in sequence. In addition， methods shown in fig.8 and fig-9 could be referred to.Distinguish of Joint guide:When using the joint guide, we use the same English capital letter to represent the same series guide, and the consecutive Arabic number represents the joint sequence. Two sides (head joint with head)with the same Arabic letter(see fig-11）When tightening the bolts， suggest using a constant torque wrench.The recommended torque value is shown in Tab-11

Sealaccessories of Linear Guideway:

Conditions and situations will be used with the wide use of linear guideways. To meet different customers' seal protection requirements, we designed the seal types below to choose from when ordering：If the working condition worsens with enough room beside the seal fail， the dustproof bellows can be added. (see fg-12）

Lubrication of Linear Guideway:

Keep working conditions clear and tidy to avoid scrap iron and dirty foreign materials in the body of the linear guideway. A dust-workshop dust-proof device equipment should be assembled, including under the seal of LMG. (See fig-13）The primary purpose of lubrication is to eliminate friction and abrasion to avoid superheating, which will damage the inner structure and influence motion function. Before ex-factory, the linear guides are injected with low-noise grease to ensure the excellent lubrication of balls in motion， but to avoid the deficiency caused by the wastage of lubrication, we suggest supplementing periodically when the block's motion travels to 50km. When linear guideway is moving at a high velocity (V>=35m/min）N32 lubrication oil is recommended (refer to GGB443-84）. It is equivalent to 20# machinery oil in old standard, when temperature is 40°C, oil's viscosity is 28.5~35.2cst. The linear guideway should be lubricated periodically or connected with an oil hose (shown in Fig-13）. Li grease is recommended when it's running at low velocity (V<35m/min）

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