Comparison ledger
Lapmaster 12 Lapper, PR Hoffman 1500, side by side. Every value shown is drawn from the cited encyclopedia entries.
| Attribute | 12 LapperLapmaster | 1500PR Hoffman |
|---|---|---|
| OEM | Lapmaster | PR Hoffman |
| Category | CMP | CMP |
| Wafer size | — | — |
| Process node | — | — |
| Introduced | — | — |
| Production run | — | — |
| Lifecycle | — | — |
| Lifecycle milestones | — | — |
| Control system | — | — |
| Generation | — | — |
| Family | — | PR Hoffman 1500 |
| Specifications | ||
| Outside plate diameter | 12 inches[1] | — |
| Lapping Speed Range | 0 to 60 rpm[2] | — |
| Wafer Size Compatibility | 4 inches or smaller[1] | — |
| Input Voltage | 110 V[1] | — |
| Frequency | 60 Hz[1] | — |
| Phase | 1[1] | — |
| Number of Rings | 3[1] | — |
| Number of Weights | 3[1] | — |
| Includes Slurry System | Yes[1] | — |
| Includes Timer | Yes[1] | — |
| Model | — | 85T[3] |
| Type | — | Double-sided planetary lapping / polishing machine[3] |
| Diameter | — | 19 inch[3] |
| Motor | — | 1.5 horsepower variable speed DC motor with controller[3] |
| Controller input | — | 208/230V, 50/60 Hz[3] |
| Carrier | — | 85 tooth carrier[3] |
| Recommended part thickness minimum | — | 0.010 inch [250 micron][3] |
| Recommended part diameter maximum | — | 4-1/4 inch [108 mm] or smaller[3] |
| Maximum part circle | — | 6.6 inch [168 mm][3] |
| Stainless steel hood | — | Standard on all PR-1 models[4] |
| Plate lifter | — | Standard on the 85 tooth model[4] |
| Series | — | 1500 SERIES[4] |
| Machine type | — | double-sided planetary lapping and polishing machine[3] |
| Tub | — | stainless steel tub[3] |
| Lapping plates | — | smooth cast-iron lapping plates[3] |
| Drive gears | — | cast iron planetary drive gears[3] |
| Controls | — | digital lap cycle timer and bottom plate adjustment system[3] |
| Recommended parts thickness | — | 0.010 inch minimum[3] |
| Recommended part diameter | — | 4-1/4 inch or smaller[3] |