The Z326-2010 is a 20-position fixed-angle rotor for 10 mL tubes in the Hermle Z326 family — the right rotor when the workflow runs 20 × 10 mL samples per cycle at high RCF and the operator wants a single-tube-format rotor without adapter swaps. 14,000 rpm / 21,472 × g performance covers the high-RCF protein-pelleting and post-lysis clarification workflows that 10 mL clinical or research samples typically need. Per the shared Z326 / Z32-HK accessory catalog, this rotor is compatible with both the Z326 chassis family and the Z32-HK chassis — the same rotor moves between chassis types that share spindle and speed-class compatibility.
Key Specifications
| SKU | Z326-2010 |
| Type | Fixed-angle rotor — 20 position |
| Tube capacity | 10 mL each |
| Tube count | 20 |
| Compatible chassis | Z326 family (and cross-compatible with Z32-HK per shared accessory catalog) |
| Max. operating speed | 14,000 rpm |
| Max. RCF at operating speed | 21,472 × g |
| Max. radius | 9.8 cm |
| Max. tube ø | 16 mm |
| Acceleration | (per brochure schedule, varies by chassis) |
| Deceleration | 37 / 1,186 sec (standard / extended-unbraked, per brochure) |
| Adapter requirement | None — direct 10 mL tube fit |
Compatibility & Configuration
Chassis compatibility. The Z326-2010 fits the Z326 family (and is cross-listed in the Z32-HK accessory catalog — Hermle's accessory-table convention groups rotors that share spindle dimensions and speed-class compatibility across the Z326 and Z032-HK chassis lines). The rotor can be moved between compatible chassis without reconfiguration, and the chassis's RFID rotor-identification system reads the rotor at insertion to apply the correct speed cap and imbalance threshold.
Direct 10 mL tube fit — no adapter required. Unlike rotors that accept multiple tube formats via insert sets, the Z326-2010 is engineered around the 10 mL tube format directly. This is a workflow-efficiency feature: no per-cycle adapter handling, no risk of incorrect adapter installation, no adapter-induced radius variation.
16 mm maximum tube diameter. Standard 10 mL clinical and research tubes (Vacutainer 10 mL ≈ 16 mm OD; standard 10 mL serum tubes ≈ 16 mm) fit directly. Confirm tube OD against the 16 mm specification at order if using non-standard 10 mL tube formats.
RFID-tagged. Like all Hermle Z-series rotors, the Z326-2010 carries an RFID tag that the chassis reads at insertion. The drive automatically applies the rotor's rated 14,000 rpm cap and tunes the per-rotor imbalance threshold to the rotor's load characteristics.
Application Profile
20-position 10 mL clinical sample workflows — the dominant application. Clinical-research, blood-bank, and immunology workflows that batch 10 mL primary samples benefit from 20-tube parallel throughput at high RCF without adapter handling.
Post-lysis debris clearance at 21,472 × g for 10 mL bacterial or mammalian lysate aliquots — clears membrane fragments and insoluble debris before downstream chromatography or precipitation.
High-throughput protein precipitation. TCA, acetone, or ammonium-sulfate precipitation across 20 × 10 mL aliquots in one cycle — high throughput at the same g-force class as smaller-capacity microcentrifuge work.
Mid-volume serum / plasma pellet recovery when a workflow batches 10 mL primary samples for high-RCF separation rather than the standard low-RCF clinical separation profile.
Multi-sample method development — when comparing pelleting behavior across 20 sample variations under identical conditions, single-rotor 20-tube throughput supports controlled-comparison work.
Loading & Balance
20-tube symmetric loading. With 20 positions, the load-balancing pattern is opposite-pair distributed across the rotor (positions 1+11, 2+12,... 10+20). Pre-balance pairs by weight before insertion. The chassis's RFID-aware imbalance shut-off catches asymmetric loads, but operators should still pre-balance.
Direct tube fit. No adapters means no adapter-mass variation across positions — symmetric loading is determined entirely by sample mass plus tube mass.
Selectable accel/decel. The chassis's selectable acceleration / deceleration profiles (10 each, including unbraked) apply to this rotor. Use moderate decel for protein-pelleting to keep pellets compact; use unbraked decel for loose-pellet or gradient work.
Ordering & Configuration
Z326-2010 ships as the rotor body alone. No tubes, no adapters (none required for the 10 mL direct-fit format). Operator's manual / installation guide for the rotor body is included.
Use the quote request to confirm: chassis pairing (Z326 family or Z032-HK), tube specification (confirm your 10 mL tube format fits the 16 mm max ø), training, and lead time.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the rotor body. Includes balance validation through the Hermle service network — recommended at install plus annually for high-utilization environments.
20 × 10 mL vs other Z326 rotors: if your workflow is 6 × 85 mL high-RCF angle work, see Z326-0685 or Z326-0485 (4 × 85 mL angle). For 6 × 50 mL high-speed work, see Z326-0650-HS. The Z326-2010 (this product) is the right pick specifically when 20 × 10 mL parallel throughput at ~21,000 × g matches the workflow.
