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No.000299 Simplified Fine Adjustment Table
30
30
Floating in all directions due to the use of thrust bearings
Relevant category
Pointing Plate
| Product name | Pointing Plates |
|---|---|
| Part number | PPL20 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Inexpensive option
Available sizes
■Pointing Plates
| Material | Tape |
|---|---|
| 1050 Aluminum Alloy (Clear Anodize) | Provided |
| PET Plastic | Provided |
| Polycarbonate | Not Provided |
■Sizes
| Length |
|---|
| 12 |
| 20 |
| 30 |
| 30 |
Thrust Ball Bearings
| Product name | Thrust Ball Bearings |
|---|---|
| Part number | B51101 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Allows for adjustments in multiple directions
Available sizes
■Thrust Ball Bearings
| Material | |
|---|---|
| Steel Type | 52100 Bearing Steel |
| Stainless Steel | 440C Stainless Steel |
■Sizes and Dimensions
| I.D. | Raceway plate O.D. | Raceway plate I.D. | Thickness |
|---|---|---|---|
| 10 | 24 | 11 | 9 |
| 26 | 12 | 11 | |
| 12 | 26 | 13 | 9 |
| 28 | 14 | 11 | |
| 15 | 28 | 16 | 9 |
| 32 | 17 | 12 | |
| 17 | 30 | 18 | 9 |
| 35 | 19 | 12 | |
| 20 | 35 | 21 | 10 |
| 40 | 22 | 14 | |
| 25 | 42 | 26 | 11 |
| 47 | 27 | 15 | |
| 30 | 32 | 11 | |
| 52 | 32 | 16 |
Performance info.
■Speeds / Loads (Load Info.) of the Thrust Ball Bearings
| I.D. | Raceway Plate O.D. | Basic Load Rating | Allowable Rotational Speed rpm | |||
|---|---|---|---|---|---|---|
| Steel Type | Stainless Steel | |||||
| Ca (Dynamic) kN | Coa (Static) kN | Ca (Dynamic) kN | Coa (Static) kN | |||
| 10 | 24 | 10.1 | 14 | 5 | 6.96 | 6700 |
| 26 | 12.8 | 17.1 | - | - | 6000 | |
| 12 | 26 | 10.4 | 15.4 | 5.15 | 7.7 | 6700 |
| 28 | 13.3 | 19 | - | - | 5600 | |
| 15 | 28 | 10.6 | 16.8 | 5.25 | 8.38 | 6300 |
| 32 | 16.7 | 24.8 | - | - | 5000 | |
| 17 | 30 | 11.4 | 19.5 | 5.39 | 9.07 | 6000 |
| 35 | 17.3 | 27.3 | - | - | 4800 | |
| 20 | 35 | 15.1 | 26.6 | 7.11 | 12.36 | 5300 |
| 40 | 22.5 | 37.5 | - | - | 4300 | |
| 25 | 42 | 19.7 | 37 | 9.76 | 18.63 | 4800 |
| 47 | 28 | 50.5 | - | - | 3800 | |
| 30 | 20.6 | 42 | 10.2 | 21.08 | 4300 | |
| 52 | 29.5 | 58 | - | - | 3400 | |
IDEA NOTE Floating in all directions
By attaching the raceway plates of the thrust bearings in the opposite direction, the steel balls can move in all directions.
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Application Overview
Purpose
- Fine adjustment of workpieces or jigs on the table.
- Adjustments in inclination and the X and Y directions are possible.
Points for use
- As this is manually operated and the transfer distance is limited, this device is not suitable for applications requiring long strokes and large applied forces.
Target workpiece
- Shape: Thin glass plate
- Size: 40 x 25 x 1mm
Weight: 1g
Design Specifications
Operating Conditions or Design Requirements
- Adjustment stroke X-Y ±3mm
Required Performance
- Minimum adjustment amount: 0.001mm
- Maximum load: 10N
Selection Criteria for Main Components
- Micrometer heads with a stroke of 3mm or more can be mounted from the top are selected.
Design Evaluation
Other Design Consideration
- The movable table is retained at the datum plane by tension springs.
- To accommodate workpieces of various shapes (load balance), inclination adjusting bolts are installed at four locations outside the workpiece mount.
- Setting two scratched points as origins, pointing plates indicate the current positions in the X and Y directions with respect to their adjustment ranges.
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