ISUTAMI BEARINGS
SWB Linear Bearing Pillow Block
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ISUTAMI BEARINGS

SWB Linear Bearing Pillow Block

SWB Linear Bearing Pillow Block
ISUTAMI SWB standard linear bearing pillow block, also known as SWB standard linear bearing unit, SWB standard linear slide unit or SWB standard linear case housing (unit), is a product fit for the imperial unit market. It consists of a closed cylindrical aluminum housing with 4 fixing holes and a matching an SW standard linear bearing or an SSW super linear bearing. The unit has two circlips. There are two rubber seals (UU) at both ends of the linear bearing to prevent debris or contamination of linear ball bearing. In addition, the aluminum casing is small and light, and the aluminum pillow block surface can be oxidized for greater corrosion resistance.
SWB Linear Bearing Pillow Block
ISUTAMI SWB standard linear bearing pillow block, also known as SWB standard linear bearing unit, SWB standard linear slide unit or SWB standard linear case housing (unit), is a product fit for the imperial unit market. It consists of a closed cylindrical aluminum housing with 4 fixing holes and a matching an SW standard linear bearing or an SSW super linear bearing. The unit has two circlips. There are two rubber seals (UU) at both ends of the linear bearing to prevent debris or contamination of linear ball bearing. In addition, the aluminum casing is small and light, and the aluminum pillow block surface can be oxidized for greater corrosion resistance.

SWB Linear Bearing Pillow Block Size Chart

SWB Linear Bearing Pillow Block
Bearing No. Shaft
Diameter
Main Dimensions Mounting Dimensions Weight
(Kg)
H E W L F T G K B C S1
SWB8 12.7 17.45 25.4 50.8 42.88 31.8 6.528 28.7 6.342 25.4 42.88 3.94 0.058
SWB12 19.05 23.8 34.92 69.85 52.4 44.42 7.93 41.25 7.925 31.75 60.33 4.75 0.136
SWB16 25.4 30.15 41.28 82.55 71.45 55.55 9.53 50.8 10.3 44.45 73.03 5.56 0.264
SWB20 31.75 38.1 50.8 101.6 92.08 72.21 11.88 66.65 12.71 50.8 88.9 5.56 0.585
SWB24 38.1 44.45 60.32 120.7 101.6 82.56 12.73 76.2 14.29 63.5 104.8 7.16 0.765
SWB32 50.8 53.97 76.2 152.4 127 103.2 15.87 98.4 15.88 82.55 133.4 10.34 1.578
Remarks: SWB use the SW series bearing.

SWB Linear Bearing Pillow Block Features

The SWB standard linear housing is a closed, single length inch version that is matching with an SW standard linear bearing or an SSW super linear bearing. The closed bearing design of the housing allows for less cost by using the end support shaft. The advantage of a linear bushing is not expensive to manufacture and is used in an infinite stroke. When the loading ball contacts the shaft at a certain point, the bearing capacity of the bearing application is very small. High-precision horizontal movement can be obtained by rotating the ball with very little frictional resistance.

If you are producing CNC milling machines, milling machines or lathes that require precise linear motion, it is a perfect solution to install this aluminum bearing pillow block with SW standard linear bearings or SSW super linear bearings. Aluminum casing size range: length (L) ranges 42.88-127mm; width (W) ranges 50.8-152.4mm; height (F) ranges 31.8-103.18mm; the minimum model SWB8 combination size is 42.88*50.8*31.8mm, the maximum model SWB32 combination size is 127*152.4*103.18mm. The length and width data are the same as the SWA standard linear bearing pillow block. The aluminum housing has four CNC drilled holes, tapped holes and countersunk holes of the same size (S) range of 3.94-10.34mm.

A typical CNC system consists of a linear shaft of matching diameter, with a shaft diameter ranging from 12.7 to 50.8 mm, mounted on both ends of the shaft by two end supports, and a linear bearing casing with linear bearings running along the shaft. Most CNC machines have two such components mounted side-by-side, using a housing as a stand to support the mobile platform. The housing can be mounted from above or below, making it easy to install into the intended system. Positioning and accuracy enhancement are facilitated by being used as a side aspect of the datum. The extruded aluminum case has undergone sufficient post-extrusion heat treatment to create a compact, lightweight and precision item.
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