STROKE BUSH SLIDE ROTARY BUSH STROKE BUSH STRUCTURE AND ADVANTAGES・ E-2 ALLOWABLE SPEED FOR COMBINED ROTATION AND STROKE MOTION・ E-2 RATED LOAD AND RATED LIFE・ ・・ E-2 FIT・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ E-3 USE AND HANDLING PRECAUTIONS・ E-5 DIMENSION TABLE・・・・・・・・・・・・・・・・ E-6〜 STRUCTURE AND ADVANTAGES・ E-10 RATED LOAD AND RATED LIFE・ ・・ E-12 APPLICATION EXAMPLES・・・・・・・・・ E-14 USE AND HANDLING PRECAUTIONS・ E-15 FELT SEAL・ ・・・・・・・・・・・・・・・・・・・・・・・ E-15 DIMENSION TABLE・・・・・・・

STROKE BUSH STROKE BUSH ALLOWABLE SPEED FOR COMBINED ROTATION AND STROKE MOTION The NB stroke bush is a linear and rotational motion mechanism utilizing the rotational motion of ball elements between an outer cylinder and a shaft. It is compact and can withstand high loading. The retainer is made of a light metal alloy with high wear resistance. Smooth motion is achieved under high-speed and high-acceleration conditions. Although the linear motion is limited to a specific stroke length, the combined rotation and stroke motion is achieved with very little frictional resistance. The NB stroke bush...

STROKE BUSH MOUNTING Examples of mounting methods of Stroke Bush are shown in Figure E-2. To avoid deformation, do not fix outer cylinder by using set screw. Figure E-2 Mounting Method Maximum Stroke The maximum stroke in the dimension table is the stroke limit. Retainer Slippage The retainer can slip under high-speed motion, vertical application, unbalanced-loading, and vibrating conditions. It is suggested that the stroke to be set as a 80% of the maximum stroke in the dimension table. It is also recommended that the bush be cycled to perform the maximum stroke several times, so that the retainer...

STROKE BUSH SR-UU TYPE −Standard Type− −Standard Type with Seals− part number structure part number structure inner contact diameter (dr) seals on both sides

STROKE BUSH SR-BUU TYPE −Double Retainer Type− −Double Retainer Type with Seals− part number structure part number structure inner contact diameter (dr) inner contact diameter (dr) seals on both sides double retainer

SLIDE ROTARY BUSH SLIDE ROTARY BUSH The NB Slide Rotary Bush SRE Series provides rotary and linear motion functions. Linear motion with unlimited stroke and rotary motion are merged into a single bush resulting in great space saving compared with a combination of any conventional bearings. There are three types; standard, flange, and unit type with sizes ranging from 6 to 40. Standard Type Square Flange Type SREK TYPE NB Slide Rotary Bush features a special retainer fitted into cylindrical steel outer cylinder and is designed to guide steel balls for smooth circulation in its retainer. The retainer...

SLIDE ROTARY BUSH FIT RATED LOAD AND RATED LIFE The rated life and load rating are defined as follows. Rated Life When a group of slide rotary bearings of the same type are used under the same conditions, the rated life is defined as the total number of rotations made without causing flaking by 90% of the bearings. Basic Dynamic Load Rating The basic dynamic load rating is defined as the load with a constant magnitude and direction at which a rated life of 10 6 rotations can be achieved. Basic Static Load Rating The basic static load rating is defined as the load with a constant direction that...

SLIDE ROTARY BUSH APPLICATION EXAMPLES USE AND HANDLING PRECAUTIONS Lubrication Dust Prevention Lubrication is needed (1) to prevent heat fusing by reducing friction between the rolling elements and the tracking surface, (2) to reduce wear of the structural elements, and (3) to prevent rusting. Lubrication affects both the performance and life of the bush. A lubrication method and a lubrication agent appropriate to the operating conditions should be selected. For oil lubrication, turbine oil (ISO standard VG32-68) is recommended. For grease lubrication, lithium soap based grease No. 2 is recommended....

SLIDE ROTARY BUSH part number structure example SRE 25 inner contact diameter (dr) ※If the inner contact diameter exceeds 40 mm, please contact NB.

SLIDE ROTARY BUSH SREK TYPE − Square Flange type − part number structure example SREK 25 SREK type inner contact diameter (dr)

SLIDE ROTARY BUSH SMA-R TYPE SMA-RW TYPE part number structure part number structure －Block type－ －Double-Wide Block type－ SMA-R type SMA-R type double type inner contact diameter inner contact diameter tolerance basic load rating allowable dynamic static revolutions mass per minute C Co inner contact diameter basic load rating allowable dynamic static revolutions mass per minute C Co SLIDE ROTAR

SLIDE ROTARY BUSH AK-RW TYPE part number structure part number structure －Compact Block type－ －Double-Wide Compact Block type－ double type inner contact diameter inner contact diameter tolerance basic load rating allowable dynamic static revolutions mass H C Co per minute inner contact diameter basic load rating allowable dynamic static revolutions mass H C Co per minute SLIDE ROTARY BUSH

SLIDE ROTARY BUSH SMP-R TYPE －Pillow Block type－ part number structure example SMP 25 R SMP-R type inner contact diameter

SLIDE ROTARY BUSH SLIDE ROTARY BUSH NB's RK type slide rotary bush is a highly accurate and high load capacity bearing providing smooth continuous linear and rotational motions. Its structure imposes no constraints on linear and rotational motions. It is much more compact than a standard slide bush with separate rotational bearing. part number structure example RK 25 G UU - OH STRUCTURE AND ADVANTAGES The RK type slide rotary bush uses a retainer similar to that used in the SR type stroke bush. This retainer gives a smooth motion in a high rotational application. SM type slide bush is incorporated,...