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PBG [Polygon Ball Guide]Technical inquiry sheet

Structure and Features

PBG consists of a polygonal shaft, precision balls, retainer, and outer sleeve. Multiple configurations are available depending on application needs. The polygonal shaft and inner surface of the outer sleeve virtually eliminate rotation.
The high ball count ensures smooth motion and high rigidity with minimal clearance.

1) High precision and rigidity   :   Point contact between the balls and the mirror-polished polygonal shaft and inner surface of the sleeve ensures straightness, smooth motion, and essentially zero rotation. This maintains stability and accuracy by minimizing yawing, rolling, and pitching. The high ball count between the two surfaces also maintains rigidity.

2) Minimal resistance   :   Point contact between balls and mirror-polished surfaces results in low friction and minimal loss of rolling movement.
3) Stable and fast performance   :   Polygonal ball arrangement allows a preload of several μm to achieve improved rigidity and straightness. This reduces looseness and incidental vibration and shock, for stable accuracy and smooth motion.
4) Compact design   :   High number of small-diameter balls in a low-profile retainer keeps the OD small, the design compact, and minimizes weight.

Uses

Ideal for systems transporting small, precision parts, such as: small precision measuring instruments; OA equipment; sorters for semiconductors, LED chips, or small lenses

PBG Round Standard Type

Diameter

Model number notation

Model ㅁKp Ød ØDC ØDS Øda Lm Ls Fm Lt BALL(Ø) Co(N) C(N)
PBG-05 4 5 10 10 4 22 30 2 70 0.6 250 180
PBG-06 4.7 6 12 12 4.5 24 40 2 86 1.0 380 350
PBG-09 7.8 9.4 15 15 6 24 40 2 104 570 440

Note1) Stroke = (Outer sleeve length(Ls) - Retainer length(Lm)) x 2
Note2) Main unit : mm
Note3) 1N ≒ 0.102kgf

PBG Round Flange Type

Diameter

Model number notation

Flange Type ØDF ØDD PCD ØDS ㅁK W T Fm Ls1 Ls2
Round Square Oval
PBGF-05 PBGK-05 PBGH-05 23 3.4 17 10 18 10 2.7 2 - -
PBGFP-05 PBGKP-05 PBGHP-05 23 3.4 17 10 18 10 2.7 - 4.7 -
PBGFM-05 PBGKM-05 PBGHM-05 23 3.4 17 10 18 10 2.7 - - 14.3
PBGF-06 PBGK-06 PBGH-06 25 3.4 19 12 20 12 2.7 2 - -
PBGFP-06 PBGKP-06 PBGHP-06 25 3.4 19 12 20 12 2.7 - 4.7 -
PBGFM-06 PBGKM-06 PBGHM-06 25 3.4 19 12 20 12 2.7 - - 19.3
PBGF-09 PBGK-09 PBGH-09 28 3.4 22 15 22 15 3.8 2 - -
PBGFP-09 PBGKP-09 PBGHP-09 28 3.4 22 15 22 15 3.8 - 5.8 -
PBGFM-09 PBGKM-09 PBGHM-09 28 3.4 22 15 22 15 3.8 - - 18.2

PBGS Square Standard Type

Diameter

Model number notation

PBGSK Square Standard Type

Model Ls Fm A B C D T ØDD Lm Lt Ød ㅁKp BALL(Ø) Co(N) C(N)
PBGS-05 30 2 8 10 - - - - 22 70 5 4 0.6 250 180
PBGSF-05 30 2 8 10 17 23 2.7 3.4 22 70 5 4
PBGS-06 40 2 10 12 - - - - 24 86 6 4.7 1.0 380 350
PBGSF-06 40 2 10 12 19 25 2.7 3.4 24 86 6 4.7
PBGS-09 40 2 13 15 - - - - 24 104 9.4 7.8 570 440
PBGSF-09 40 2 13 15 22 28 3.8 3.4 24 104 9.4 7.8

Flange Type ØDF ØDD PCD ㅁK W T Ls1 Ls2
Round Square Oval
PBGSF-05 PBGSK-05 PBGSH-05 23 3.4 17 18 10 2.7 - -
PBGSFP-05 PBGSKP-05 PBGSHP-05 23 3.4 17 18 10 2.7 4.7 -
PBGSFM-05 PBGSKM-05 PBGSHM-05 23 3.4 17 18 10 2.7 - 14.3
PBGSF-06 PBGSK-06 PBGSH-06 25 3.4 19 20 12 2.7 - -
PBGSFP-06 PBGSKP-06 PBGSHP-06 25 3.4 19 20 12 2.7 4.7 -
PBGSFM-06 PBGSKM-06 PBGSHM-06 25 3.4 19 20 12 2.7 - 19.3
PBGSF-09 PBGSK-09 PBGSH-09 28 3.4 22 22 15 3.8 - -
PBGSFP-09 PBGSKP-09 PBGSHP-09 28 3.4 22 22 15 3.8 5.8 -
PBGSFM-09 PBGSKM-09 PBGSHM-09 28 3.4 22 22 15 3.8 - 18.2

Note1) Stroke = (Outer sleeve length(Ls) - Retainer length(Lm)) x 2
Note2) Square type of PBGS is only available with Square type Flange
Note3) End-flange type only possible for PBGSK
Note4) Main unit : mm
Note5) 1N ≒ 0.102kgf

video

Technical inquiry sheet  * Please print out the download file, fill in the necessary information, and contact us by FAX or E-mail.

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