The new KC series high-vacuum oil diffusion pumps can achieve a high vacuum of 1.3 × 10⁻¹⁰ Pa. Their main features include: a wide operating range, with a high pumping speed even at 1.3 × 10⁻¹⁰ Pa; a high critical fore-vacuum pressure; and a low oil carryover rate of 1.5 × 10⁻³ mg/cm·min; rapid startup, equipped with a standard oil level sight glass and a built-in water-cooled oil seal. It is the ideal vacuum source for vacuum heat treatment, brazing, and vacuum coating applications, featuring a five-stage pump core.
Main Technical Specifications of the K C Series High-Vacuum Oil Diffusion Pumps
| Specifications/Model |
KC-500 |
KC-600 |
KC-900 |
KC-1000 |
| Maximum Pressure (Pa) |
≤5x10﹣⁵ |
| Pumping Speed (L/s) |
≥12000 |
≥17500 |
≥36000 |
≥45000 |
| Critical Fore-vacuum Pressure (Pa) |
≥60 |
| Oil Return Rate (mg/cm²·min) |
≤5x10﹣³ |
| Heating Power (kW) |
12 |
9 |
24 |
24-27 |
| Power Supply Voltage (V) |
380 |
| Pump Oil Grade |
KS-3 diffusion pump oil or 275 silicone oil |
| Pump Oil Volume (L) |
5-6 |
7 |
11-12 |
12 |
| Recommended Fore-vacuum Pump Speed (L/s) |
140 |
140 |
300 |
300 |
| Dimensions (L x W x H) |
1100 x700 x 1235 |
1155x750x1235 |
1760x1100x1845 |
1770x1200x1840 |
| Weight (kg) |
320 |
380 |
900 |
980 |
KC Series High-Vacuum Oil Diffusion Pump Pumping Speed Curves

Connection Dimensions for the K C Series High-Vacuum Oil Diffusion Pumps
| Specifications/Model |
KC-500 |
KC-600 |
KC-900 |
KC-1000 |
| DN |
540 |
630 |
890 |
1000 |
| D1 |
700 |
750 |
1060 |
1120 |
| D2 |
635 |
720 |
980 |
1090 |
| A |
635 |
750 |
1073 |
1073 |
| L |
584 |
600 |
810 |
810 |
| nl-∅1 |
20-∅18 |
20-∅14 |
28-∅22 |
32-∅15 |
| dn |
150 |
150 |
200 |
200 |
| dl |
230 |
220 |
280 |
280 |
| d2 |
191 |
195 |
250 |
250 |
| n2-∅2 |
8-∅14 |
8-∅12 |
8-∅14 |
8-∅14 |
| H |
1220 |
1235 |
1810 |
1845 |
KC Series High-Vacuum Oil Diffusion Pumps