The Z327-200-AC is the swing-out rotor body alone for the Hermle Z327 / Z327-K family — 4-position swing-out without the round buckets that ship with the standard Z327-200 SKU. The "AC" suffix denotes "without buckets" per the Hermle Z-series rotor naming convention (matching Z446-750-AC, Z496-1000-AC, Z326-100H-AC). This is the right SKU when the lab is building a custom bucket configuration, replacing a worn rotor body while retaining serviceable buckets, or commissioning sealed-bucket biosafety workflows with sealed buckets sourced separately. For the standard configuration (rotor body + 4 round buckets), order Z327-200 instead at $3,159 — a $1,935.00 step-up that includes the buckets which are otherwise the limiting accessory for any 200 mL swing-out workflow.
Key Specifications
| SKU | Z327-200-AC |
| Type | Swing-out rotor body — 4 position |
| Bucket count included | 0 (rotor body only — buckets sold separately) |
| Compatible chassis | Z327 (120 V), Z327-K (120 V refrigerated) |
| Bucket envelope (when buckets installed) | 200 mL each |
| Max. operating speed (with Z327-200 buckets) | 5,000 rpm |
| Max. RCF at operating speed | 4,136 × g |
| Max. radius (with round buckets) | 14.8 cm |
| Acceleration | 21 / 102 sec (standard / extended profile) |
| Deceleration | 12 / 387 sec (standard / extended-unbraked) |
| List price | $1,935 |
Compatibility & When to Order This SKU
This SKU is the rotor body only. Order Z327-200-AC when at least one of the following applies:
- You already have compatible Z327-200 round buckets from a prior install or transferred from a retired Z327 chassis, and you only need the rotor body.
- You're commissioning a custom bucket configuration — for example, mixing round buckets and sealed buckets for different workflow protocols, or sourcing specialty bucket configurations not in the standard Z327-200 bundle.
- Replacement rotor body only — if the current Z327-200 rotor is approaching service life or has been damaged, but the buckets are inspection-pass, the rotor-only replacement is cost-effective.
- Phased biosafety procurement — when staging a biosafety upgrade by ordering the rotor body now while sourcing sealed bucket lids (Z327-200-LID) through a separate procurement cycle.
For a new install with the standard configuration, order Z327-200 instead — that SKU bundles the rotor body + 4 round buckets at $3,159. The bundle is the single-line procurement path for routine bottle-format swing-out workflows.
Compatibility — Chassis and Buckets
Chassis compatibility — Z327 family only. The Z327-200-AC fits the Z327 / Z327-K. RFID-tagged; chassis applies the rotor's rated 5,000 rpm cap automatically at insertion. The Z327 chassis's chassis-spec maximum is 18,000 rpm — without the per-rotor RFID cap, an operator could enter a higher speed than the swing-out rotor is rated for; the RFID system enforces the 5,000 rpm safety cap automatically.
Compatible buckets and lids (sold separately):
- Z327-200-BUK — Round bucket (the standard configuration; sold individually for replacement or supplementation)
- Z327-200-LID — Bucket lid for hermetically sealed configuration (biosafety workflows)
Compatible adapter library — when buckets are installed, the deep Z327-200-A* adapter family extends compatibility to tube formats from 1.5 / 2.0 mL micro tubes up through 100 mL bottles. Adapters are SKU-matched to the bucket profile.
Workflow Notes
Bucket compatibility verification. Before mounting buckets onto the Z327-200-AC rotor body, confirm that the buckets are rated for the 5,000 rpm chassis-rotor pairing. The Z327-200-BUK round buckets are the standard fit; the Z327-200-LID adds hermetic sealing on top of those buckets.
Pre-cooling on Z327-K. The chassis's per-rotor pre-cooling program is rotor-specific. With the rotor body only (no buckets in inventory), pre-cooling estimates may differ from the assembled rotor + bucket mass. Once the bucket configuration is installed, the chassis pre-cooling timing matches the assembled mass.
Lid torque (when sealed configuration is used). If the lab is configuring this rotor body with Z327-200-LID for hermetically sealed biosafety workflows, the lid torque per Hermle service instructions is critical for full seal performance. Annual lid-and-seal inspection through the Hermle service network is recommended for biosafety-critical workflows.
Ordering & Configuration
Z327-200-AC ships as the swing-out rotor body only — no buckets, no bucket lids, no adapters. Operator's manual / installation guide for the rotor body is included.
Required for operation:
- Compatible Z327-200 series buckets (sold separately, or already in the lab's inventory)
- For full 4-position operation: 4 buckets (and 4 lids if sealed configuration)
- Optional: adapters from the Z327-200-A* series for smaller-volume tube formats
Confirm at quote: chassis pairing (Z327 / Z327-K), bucket source (existing inventory, new round-bucket order, or sealed-bucket configuration), adapter inventory if needed, and lead time. The Hermle / Benchmark distributor can advise on combined-line pricing if the order includes the rotor body + buckets together.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the rotor body. Buckets sourced separately carry their own bucket-SKU warranty terms.
Z327-200 vs Z327-200-AC selection: if you're commissioning a new Z327 install or don't already have compatible buckets, order Z327-200 ($3,159) — bundled rotor + 4 round buckets is the single-line procurement path. Order Z327-200-AC (this product) at $1,935 only when you already own compatible buckets, are configuring a custom bucket set, or need a rotor-only replacement.
