The Z366-K is the refrigerated counterpart of the Z366 — same 16,000 rpm / 24,325 × g performance ceiling and same 6 × 250 mL bottle capacity, with on-board CFC-free refrigeration that holds the chamber from −20 °C to +40 °C. This is the Hermle answer for cold-chain protein production, vaccine concentration, and any 250 mL-bottle workflow that requires temperature control across long or sequential cycles.
Voltage options: This unit can be ordered with European voltage requirements (230V/50Hz). Contact us to order.
Key Specifications
| Max. speed | 15,000 rpm (swing-out) / 16,000 rpm (angle rotor) |
| Max. RCF | 21,379 × g (swing-out) / 24,325 × g (angle) |
| Temperature range | −20 °C to +40 °C (1 °C increments, °C or °F selectable) |
| Refrigeration | CFC-free; pre-cooling program; standstill cooling |
| Max. volume | 6 × 250 mL |
| Speed range | 200 – 15,000 / 16,000 rpm (rotor-dependent) |
| Running time | 10 s to 59 min 50 s; 1 min to 99 h 59 min; continuous |
| Program memory | 99 saved runs (including rotor type and temperature) |
| Dimensions (W × H × D) | 28.3 in × 14 in × 20 in (72 × 36 × 51 cm) |
| Weight | 170 lb (77 kg) |
| Power | 120 V / 50 – 60 Hz, 785 W |
| Noise level | < 63 dBA at max. speed |
| Safety standards | IEC 61010 |
Application Profile
Cold-chain recombinant-protein prep. E. coli pellet recovery, inclusion-body solubilization wash, and post-lysis debris pelleting at 4 °C — preserves activity for cold-sensitive enzymes and stabilizes proteolysis-prone preparations.
Vaccine-concentration cold-chain. Sucrose cushion and step-gradient virus concentrations frequently specify ≤8 °C separations; the Z366-K's pre-cooling program brings the chamber to set-point before sample insertion.
Cryoprecipitate and blood-component separation. 250 mL plasma-bag and large-tube separations at controlled low temperatures — fits component-therapy and blood-bank workflows.
Cold-temperature density gradients. Continuous and step gradients in iodixanol, Percoll, or sucrose require unbraked deceleration to preserve gradient boundaries; the Z366-K's selectable accel/decel includes an unbraked option.
Environmental and forensic chilled-matrix work. Refrigerated water, sediment, and tissue separations where ambient warming would degrade the matrix or disturb microbial counts.
Design Architecture
CFC-free refrigeration. Set-point control from −20 °C to +40 °C in 1 °C increments. Pre-cooling brings the chamber to set-point before run start; standstill cooling holds set-point between cycles. The refrigeration unit is housed behind the rotor chamber, which accounts for the deeper chassis vs. the non-refrigerated Z366.
RFID rotor identification with per-rotor over-speed protection. Same rotor catalog and identification system as Z366 — RFID at insertion sets the rotor's speed cap and imbalance threshold automatically.
Active imbalance identification with rotor-specific cut-off. Per-rotor imbalance thresholds; asymmetric loading or mid-spin failure triggers shutdown.
Motor-driven lid lock. Hard interlock — lid cannot unlock during a run.
Maintenance-free induction motor. No brush wear; refrigeration compressor is the primary scheduled-service touchpoint.
Microprocessor with one-handed touch operation. Splash-proof keypad; large LCD with simultaneous set / actual display for speed, RCF, time, and temperature.
99-slot program memory with rotor type and temperature stored per program.
Selectable accel/decel including unbraked deceleration. Audible run-end alert with multiple melody options.
Stainless-steel sample chamber.
Ordering & Configuration
Ships without rotor. The Z366-K body ships with operator's manual and power cord. Select your rotor from the Z366 rotor catalog (shared with the non-refrigerated Z366; linked from this page) — 6 × 250 mL swing-out, 6 × 85 mL angle, 16 × 50 mL fixed-angle, and 24 × microtube options.
Voltage variants: The 230 V / 50-60 Hz model is available by special order.
Non-refrigerated alternative: Z366 — same chassis without refrigeration, when temperature control isn't required and a smaller footprint matters.
Step-up volumes with refrigeration: Z446-K for 4 × 750 mL bottle capacity. Z496-K for 4 × 1,000 mL floor-standing high-volume work.
Warranty & service: 5-Year Hermle warranty (3 years full + 2 years drivetrain). Refrigeration service, rotor validation, balance checks, and North American support available through the Benchmark / Hermle distributor network.
Frequently Asked Questions
What is the maximum speed and RCF of the Z366-K? 15,000 rpm / 21,379 × g in swing-out; 16,000 rpm / 24,325 × g with an angle rotor.
What temperature range does the Z366-K hold? −20 °C to +40 °C via CFC-free refrigeration, with a pre-cooling program and standstill cooling between cycles.
What is the Z366-K's bottle capacity? 6 × 250 mL, sharing the Z366 rotor catalog.
How does the Z366-K differ from the Z366? Same performance and rotor catalog, plus on-board refrigeration; the refrigeration unit behind the chamber makes the chassis deeper (28.3 in vs 20 in).
What voltage does the Z366-K use? 120 V / 50–60 Hz standard; a 230 V / 50–60 Hz model is available by special order.
