NB BUSH SERIES

SR
standard type

SR-UU
both sides seal

SR-B
double retainer

SR-BUU
double retainer
both sides seal

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		The NB's 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 with stand 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 predetermined stroke distance, the smooth combination of linear and rotational motions is achieved with very little frictional resistance. The NB stroke bush may be conveniently used in a variety of applications. NB's SLIDE ROTARY BUSH is a highly accurate rigid component providing smooth continuous linear and rotational motion. Its structure imposes no constraints on either motion. It is much more compact than a standard slide bush with separate rotational bearing.
		>> Go to NB SLIDE BUSH




Outline of STROKE BUSH

The retainer in the NB stroke bush positions the ball elements in a zigzag arrangement. The inner surface of the outer cylinder is finished by grinding, resulting in the smooth motion of the ball elements. Each of the ball elements is held in a separate hole and smooth motion is achieved for both rotational motion and linear motion. The retainer moves half the distance of the linear motion, therefore, the stroke distance is limited to approximately twice the distance the retainer can travel within the outer cylinder. The actual travel distance should be limited to 80% of the travel distances as listed in the dimensional tables.

>> SR Type

Either Single retainer or double-wide retainer is available, (also available for both sides seal. )

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Outline of SLIDE ROTARY BUSH

SLIDE ROTARY BUSH is composed of retainer fitted into cylindrical steel outer race and is designed to guide steel balls for smooth circulation in its retainer. The retainer is also designed to rotate freely towards radial direction and offers smooth linear and rotary motions.Moreover, there are a attachment compatibility between SLIDE BUSH [SM Type], [SMK Type], SLIDE UNIT [SMA (W) Type ] , [AK (W) Type] and [SMP Type].




SRE type

>> SRE Type - standard type -

This is a cylidrical standard type.

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		>> SREK Type - square flange type -



		This is a square flange type of SRE.
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		>> SMA-R(W) Type - block type -



		This is a block type of SRE, also available for double-wide type.
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		>> AK-R(W) Type - compact block type -



		This is a compact block type of SRE, also available for double-wide type.
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		>> SMP-R Type - pillow block type -



		This is a pillow type of SRE. The housing is made of cast iron.
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RK type - unlimited linear motion type -

NB's RK type slide rotary bush is a highly accurate rigid component providing smooth continuous linear and rotational motion. Its structure imposes no constraints on either motion. It is much more compact than a standard slide bush with separate rotational bearing.

>> RK Type

This type uses a retainer similar to that used in the SR type stroke bush. This retainer provides the results of smooth rotational motion. The SM type slide bush is also used providing the smooth linear motion. Large ball elements are used enabling the bushing to withstand high loads.

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NB STROKE BUSH Lineup

NB's STROKE BUSH lineup can be seen below.
Please refer to the PDF catalog on the Catalog page for more detailed information about each product.
2D and 3D CAD files for Ball Spline can be found at Downloads page.
In addition, the following specifications are available as standard options for these products.

without seal/both sides seal

single retainer/double retainer

* Click each name or image, Part number structure can be checked.




NB SLIDE ROTARY BUSH Lineup

NB's SLIDE ROTARY BUSH lineup can be seen below.
Please refer to the PDF catalog on the Catalog page for more detailed information about each product.
2D and 3D CAD files for Ball Spline can be found at Downloads page.
In addition, the following specifications are available as standard options for these products.

	single type/double-wide type (double-wide type is available for SMA-R/AK-R only.)
	without seal/both sides seal (available for RK only)

* Click each name or image, Part number structure can be checked.

SRE standard type				SREK square flange



SMA-R block type				SMA-RW double-wide block type


When choosing linear system products, it is necessary to calculate elements such as load-bearing and accuracy, taking into consideration the type of machinery and environment in which the system will be used. Please refer to the Engineering Information page regarding technical calculations.
>> Go to Engineering Information



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