The Z326-100H-AC is the swing-out rotor body alone for the Hermle Z326 / Z32-HK 4 × 100 mL configuration — without the hermetically sealed buckets that ship with the standard Z326-100H SKU. The "AC" suffix denotes "without buckets" (paralleling the Z327-200-AC, Z446-750-AC, and Z496-1000-AC pattern in the Hermle Z-series rotor catalog). This is the right SKU when the lab is building a custom bucket configuration, replacing a worn rotor body while retaining serviceable hermetically sealed buckets, or commissioning sealed-bucket biosafety workflows with buckets sourced separately. For the standard sealed-bucket biosafety configuration (rotor body + 4 hermetically sealed buckets + 4 lids), order Z326-100H instead at $2,761 — that's a $747 step-up that includes the sealed buckets which are otherwise the limiting biosafety-spec accessory.
Key Specifications
| SKU | Z326-100H-AC |
| Type | Swing-out rotor body — 4 position |
| Bucket count included | 0 (rotor body only — buckets sold separately) |
| Compatible chassis | Z326 family + cross-compatible Z32-HK per shared accessory catalog |
| Bucket envelope (when buckets installed) | 100 mL each |
| Max. operating speed (with Z326-100H buckets) | 5,000 rpm |
| Max. RCF at operating speed | 4,080 × g |
| Max. radius (with sealed buckets) | 14.6 cm |
| Deceleration | 15 / 150 sec (standard / extended-unbraked, same as Z326-100H) |
| Temperature at max. speed (refrigerated chassis) | 2 °C |
| List price | $2,014 |
Compatibility & When to Order This SKU
This SKU is the rotor body only. Order Z326-100H-AC when at least one of the following applies:
- You already have compatible Z326-100H hermetically sealed buckets from a prior install or transferred from a retired Z326 chassis, and you only need the rotor body.
- You're commissioning a custom bucket configuration — for example, mixing standard open buckets and sealed buckets for different workflow protocols, or sourcing specialty bucket configurations not in the standard Z326-100H bundle.
- Replacement rotor body only — if the current Z326-100H rotor is approaching service life or has been damaged but the sealed buckets and lids are inspection-pass, the rotor-only replacement is the cost-effective path.
- Phased biosafety procurement — when the lab is staging the biosafety upgrade and ordering the rotor body now while sourcing sealed buckets through a separate procurement cycle.
For a new install with sealed buckets, order Z326-100H instead — that SKU bundles the rotor body + 4 sealed buckets + 4 lids at $2,761. The bundle saves the procurement complexity of sourcing biosafety-spec buckets as a separate line item.
Compatibility — Chassis and Buckets
Chassis compatibility. The Z326-100H-AC fits the Z326 family and is cross-compatible with Z32-HK per the shared accessory catalog. RFID-tagged; chassis applies the rotor's rated 5,000 rpm cap automatically at insertion.
Bucket compatibility. The rotor body accepts the following Z326-100H series buckets:
- Z326-100H-BUK — Hermetically sealed bucket (the standard biosafety configuration); requires Z326-100H-LID for full sealing
- Z326-100H-LID — Bucket lid for hermetic seal (replacement / individual order)
Mixing bucket types across the 4 positions is not supported — all 4 positions must use the same bucket configuration for symmetric balance and consistent biosafety performance.
Tube formats accepted (with Z326-100H buckets installed): 100 mL RB Glass (40 mm), 85 mL RB/OR (38 mm), 50 mL RB/OR (29 mm), 50 mL Falcon® (29 mm), plus smaller formats via the Z326-100H-A* adapter family.
Workflow Notes
Biosafety considerations. The Z326-100H rotor configuration (with sealed buckets) is the biosafety-spec choice in the Z326 / Z32-HK rotor family for workflows requiring aerosol containment. The Z326-100H-AC rotor body alone does not provide containment — buckets and lids must be installed and torqued per Hermle service instructions to achieve the hermetic seal.
Pre-cooling on refrigerated chassis. The chassis's per-rotor pre-cooling program is rotor-specific. With the rotor body only (no buckets installed in inventory), pre-cooling estimates may differ from the assembled rotor + bucket + lid mass. Once the bucket configuration is installed, the chassis pre-cooling timing matches the assembled mass.
Lid torque and inspection. When buckets are installed on this rotor body, the Z326-100H-LID bucket lids must be properly torqued before each spin. Annual lid-and-seal inspection through the Hermle service network is recommended for biosafety-critical workflows; lid replacement is a planned-inventory item.
Ordering & Configuration
Z326-100H-AC ships as the swing-out rotor body only — no buckets, no lids, no adapters. Operator's manual / installation guide for the rotor body is included.
Required for operation:
- Compatible Z326-100H series buckets (Z326-100H-BUK) and lids (Z326-100H-LID), sold separately or already in lab inventory
- For full 4-position operation: 4 × Z326-100H-BUK + 4 × Z326-100H-LID
- Optional: adapters from the Z326-100H-A* series for smaller-volume tube formats
Confirm at quote: chassis pairing (Z326 family or Z032-HK), bucket source (existing inventory, new bucket order, or staged sealed-bucket procurement), biosafety classification of the workflow (drives bucket-spec recommendations), and lead time.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the rotor body. Buckets and lids sourced separately carry their own bucket-SKU warranty terms.
Z326-100H vs Z326-100H-AC selection: if you're commissioning a new biosafety install, order Z326-100H ($2,761) — bundled rotor + 4 sealed buckets + 4 lids is the single-line procurement path. Order Z326-100H-AC (this product) at $2,014 only when you already own compatible sealed buckets, are configuring a custom bucket set, or need a rotor-only replacement.
