GZD Roller Guide Block

GZD Roller Guide Block

The roller guide block is a precision linear motion guide. It has a strong loading capacity and higher rigidity. In high-frequency back-and-forth conditions, such as repetitive motion, starting and stopping, it can reduce the weight of the complete machine, transmission gearing, and power cost.The roller guide block can reach higher sensitivity and high functional plane linear motion. In the condition of heavy load and varied load, it has minor elastic transmutation and gets stable linear motion and no crawl.The roller guide block can center automatically because its rolling body roller has a good guide for its rolling. Therefore, the positioning accuracy can be improved.The rollers in the roller guide block move circularly. Therefore, machine tools have no length limit by taking the roller guide block. The quantity of guide blocks depends on loading capacity and specificationThe roller guide block has wide application. A small guide block is used for linear motion parts of molds and instruments. A significant type of guide block is used for plane linear motion of heavy machine tools and precision instruments. Especially for NC and CNC machine tools.

Basic Structure of Roller Guideway Block:

The roller guide block consists of a block, roller, and recirculation. The rollers do infinite circulation motion in the hardened block and precision ground. To prevent the roller from running out from the block, rollers are designed as step rollers, and blocks are designed with unique slots, which make the rollers have to center automatically by moving to avoid side moving. It is in favor of motion flexibly under load and has a long life.

Accuracy of Roller Guideway Block:

The accuracy of the roller guide block depends on the height of the guide block mainly. For the multi-roller guide blocks used in the same plane, it should have a consistent height dimension for the same group roller guide block to get an equal distributing load. Usually, the tolerance of height is 0-10 um. For height variation of geminate roller guide blocks, see tab-1Note:Height variation of the same group is the difference of max. And min. Height dimension H of the multi-roller guide blocks used in the same plane.When ordering, please show the number of roller guide blocks used in the same plane.The manufacturer will produce in grade according to the accuracy class, except class 5; others are graded according to the height dimensions, and the same codes are in the same group in installation. The customer only needs to specify the accuracy class in ordering, not the grade code.

Key Features and Benefits of Roller Guideway Block:

Precision Roller Design: The GZD Roller Guide Block features a precision roller design that ensures smooth and accurate linear motion. The rollers are precisely engineered to minimize friction and provide excellent load-bearing capabilities, resulting in precise and efficient movement.High Load Capacity: This guide block is built to handle heavy loads. With its sturdy construction and optimized roller design, it offers exceptional load-bearing capacity, making it suitable for demanding industrial applications that require robust performance.Rigidity and Stability: The GZD Roller Guide Block's rigid structure and advanced bearing technology provide excellent stability during operation. It minimizes vibration and ensures consistent and reliable performance, even in high-speed and high-load conditions.Low Maintenance: With its durable construction and high-quality materials, the GZD Roller Guide Block requires minimal maintenance. It is designed for long-lasting performance, reducing downtime and maintenance costs for industrial operations.

Rated Load and Life:

Basic Rated Dynamic Load CThe basic rated dynamic load is,i.e., a group of the same roller guide block runs separately, and 90% of its reach placed life of 100km, in the condition of no damage of material due to contact fatigue, a constant load in the direction and quantity.Basic Rated Static Load C0The basic rated static load defines static load. The nominated contact stress constant reaches max load in the center of the contact area between rollers and guideLife Calculation

Code Rule and Definition:

Dimension:

Installation and Operation:

When the roller guide block is installed, it should ensure the assembled accuracy and parallelism between the block and rail. The standard installationway of roller guide block in the rail of machine tools is shown as Tab-4.To exert the performance of the roller guide block well, the bed rail should be hardened to face more than HRC58, surface roughness over RA0.4~0.8μm, hardened depth should reach 1~2mm.

To achieve the expected performance and durability, the roller guide block should ensure under-installation and adjustable accuracy.(1)the parallelism between the mounting and guide face: To make the guide block with equal force, the parallelism tolerance between the roller block mount ref. The side and guide rolling contact surface should be controlled at less than 0.02mm/1000mm.(2)Lean accuracy in length direction of roller: To ensure the roller is not lateral excursion and skid in the running, the parallelism of roller length direction and mounting ref. side of the machine tool should control in less than 0.02mm/300mm(3)Lean accuracy of roller block side face: To avoid the roller lateral excursion and skid in the running, the parallelism of roller axes direction and rightand left of the rolling face should be controlled at less than 0.02mm/300mm, the position accuracy is higher, the lean accuracy will be controlled better.

Lubrication:

The primary function of lubrication is to eliminate friction and tear to avoid tremendous heat, which will damage the inner structure and influence motion function. When the roller cross guide is moving at high speed (V>=15m/min), N32 lubrication oil is recommended(refer to GB443-84). When temperature is 40℃, oil's viscosity is 28.5~35.2cst,correspend to the old standard 20# mechanical oil. The roller guide block should be lubricated peridically or connected with oil hose. Li grease(GB7323-94 2#)is recommended, if the roller cross guide is running at low speed(V<=m/min).

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