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Precision Ball Ways
Precision Ball Ways with Retainers
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Precision Miniature Ball Ways

Precision Ball Way Modules
Precision Ball Splines


Precision Miniature Ball Ways

Features


TSUBAKI Precision Miniature Ball Ways feature simple construction, Four Way directional loading capacity, recirculation units with unique proprietary ball retainer and a compact rail track which simplifies installation.

Easy Accurate Installation
Accurate mounting is achieved by engaging the rail track to the slot in the bed and tightening the bolts.

Mini Ball Way Installation

Four Way Directional Rated Load
Because the steel balls are recirculated between the track and the slide unit, and the contact on both track surfaces is at a 45o angle, the unit can be dynamically loaded in all directions.

For Way Rated Load

Unique Ball Recirculation Unit
Although the TSUBAKI Precision Miniature Ball Way is basically a simple structure, it features retainers to ensure that the steel balls are securely contained within the slide unit race-way, enabling easy reasembly onto the track even when the slide unit has been removed.

Simple Construction
A one-piece tubular recirculation unit has been adopted in preference to machining the recirculation hole for non-loaded steel balls. The recirculation unit also permits a more compact design and smoother action.


Designation

TSUBAKI Precision Miniature Ball Ways are identified by specific code numbers. When placing your order, please specify the correct code by following the instructions below.


Accuracy Standards

TSUBAKI Precision Miniature Ball Ways are classified into the following three categories according to dimensional tolerance.

Tolerance Diagram
Dimensional tolerance
(micro meters)
Grade
C1
Precision
C3
High
C5
Ordinary
Item Height
H
Dimensional
Tolerance
Pair Variation
±10
5
±20
20
±40
40
Width
N
Dimensional
Tolerance
Pair Variation
±10
10
±30
30
±50
40

Parallelism
(micro meters)
Parallelism of plane C to datum plane A
Parallelism of plane D to datum plane B
Rail Track Length
(mm)
Grade
Over Up to C1
Precision
C3
High
C5
Ordinary
-
120
180
250
315
400
500
120
180
250
315
400
500
630
1.5
1.5
2
2.5
3.5
4.5
6
4
5
6
8
10
11
14
10
12
14
17
20
24
27

Manufacturing Range

Below chart shows the max. length of tracks available for each model No. of TSUBAKI Precision Miniature Ball Way

Maximum length of rail track (micro meters)
Model No. Max. Length
K 7 T R
K 9 T R
K 12 T R
500
500
500


Preload and Rigidity

Suitable preloads for TSUBAKI Precision Miniature Ball Ways may be selected according to the application. In general, when preloading is applied, rigidity will be doubled from that of the non-preloaded condition. Below shown standard TSUBAKI preload values.

Standard preload values (kgf)
Model No. Grade of Preload
Slight Preload
T0
Light Preload
T1
K 7 T R
K 9 T R
K 12 T R
0
0
0
5
5
10


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