The Z206-50-A57 is a 7 mL round tube adapter that drops into the 50 mL position on the Z206-0650 (6 × 50 mL angle rotor) for the Hermle Z206-A chassis — sold as a 6-pack, equipping the entire 6-position rotor for 7 mL workflow in a single SKU. Pairs with the Z206-50-A5C cushion for a nested-adapter approach that further converts the position to a 5 mL tube workflow.
Key Specifications
| SKU | Z206-50-A57 |
| Type | Tube adapter — 50 mL position → 7 mL round tube |
| Pack quantity | 6 adapters per SKU (matches the Z206-0650 6-position rotor) |
| Tube format accepted | 1 × 7 mL round tube (13 mm OD, 95–115 mm length per position) |
| Compatible rotor | Z206-0650 (6 × 50 mL angle rotor) |
| Compatible chassis | Z206-A |
| Nested-adapter compatibility | Z206-50-A5C cushion (further converts the A57 to hold a 5 mL tube, 13 mm OD, 65–90 mm length) |
| Max. operating speed (with adapter) | Per Z206-0650 spec — 6,000 rpm at 4,427 × g maximum |
| List price | $161 (6-pack) |
Compatibility & When to Order This SKU
Adapter pairing — Z206-0650 50 mL angle rotor only. The Z206-50-A57 is engineered to fit the 50 mL position envelope. Order this SKU when:
- Adding 7 mL workflow capability to an existing Z206-0650 install — order 1 unit for a complete 6-adapter set.
- 5 mL workflow planning — pair with the Z206-50-A5C cushion to nest down to 5 mL tube format on the same rotor.
- Replacement adapters if a current set is damaged or worn.
- Spare adapter inventory for facilities running mixed-format workflows that benefit from rotating adapter sets.
Application Profile
Pack quantity matches rotor positions. The Z206-0650 rotor has 6 × 50 mL positions; the 6/pk adapter SKU equips the entire rotor. Symmetric balance requires either all 6 positions adapted (7 mL or 5 mL workflow) or all 6 positions in their primary tube format — mixed configurations produce mass asymmetry.
7 mL round tube format compatibility. Standard 7 mL round tubes (typical clinical format, 13 mm OD, 95–115 mm length) seat directly into the adapter envelope.
Nested 5 mL workflow via A5C cushion. The Z206-50-A5C cushion drops into the Z206-50-A57 adapter, further reducing the position envelope to accept 5 mL tubes (13 mm OD, 65–90 mm length). This nested-adapter approach lets one rotor + adapter stack handle three formats — 50 mL (rotor only), 7 mL (with A57), 5 mL (with A57 + A5C).
Design Architecture
7 mL clinical and clinical-research blood-tube workflows — when the lab uses 7 mL primary collection tubes (a common clinical and pediatric format alongside 5 mL and 10 mL Vacutainer-style tubes), this adapter equips the Z206-0650 to handle 6 patient samples per cycle.
Nested 5 mL workflow — using the A5C cushion on top of the A57, the same rotor handles 5 mL pediatric or small-volume tubes for workflows mixing 5 / 7 / 50 mL formats over time.
Educational lab format flexibility — teaching labs that rotate between 7 mL, 5 mL, and 50 mL teaching exercises on the same Z206-A + Z206-0650 inventory.
Veterinary practices — 7 mL is a common veterinary blood-tube format; the adapter approach handles small-animal sample processing on a chassis configured primarily for 50 mL workflows.
Cross-format core-facility consolidation — shared Z206-A cores can stock the full Z206-0650 adapter family (A15, A57, A5C) and serve any 50/15/7/5 mL workflow on a single rotor.
Ordering & Configuration
Symmetric adapter loading. All 6 positions must use matching configurations — all six A57 adapters (7 mL workflow) or all six A57 + A5C nested (5 mL workflow). Mixed configurations produce asymmetric balance at 6,000 rpm.
Adapter seat verification. Per Hermle service instructions, confirm each adapter is fully seated in its 50 mL position before loading tubes; for nested A57 + A5C runs, confirm the cushion is seated inside the A57 before loading the 5 mL tube.
Z206-50-A57 ships as 6 adapters. Tubes and the optional A5C cushion (sold separately) are operator-supplied.
Confirm at quote: rotor pairing (Z206-0650 in inventory), chassis pairing (Z206-A), tube format (7 mL standard or 5 mL with A5C cushion), and lead time.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the adapters.
Z206-0650 rotor adapter family:
- Z206-50-A57 (this product) — 7 mL round adapter (and base for nested 5 mL workflow)
- Z206-50-A15 — 15 mL conical or round adapter
- Z206-50-A5C — 5 mL cushion that nests inside the A57 adapter
Match the adapter to the workflow's tube format; the A57 + A5C nested combination is the path to 5 mL tube workflow on the 50 mL rotor.
