The Z446-MP-RA is a bench ergonomics handling tool that assists in lifting the loaded Z446-MP-BUK rectangular bucket out of the Hermle Z446-750-AC swing-out rotor body for unloading — sold as a 2-pack. The rectangular bucket's max loading weight (640 g per Hermle spec) plus the bucket-plus-insert-plus-sample mass can make manual lifting from inside the rotor chamber awkward, especially during repeated unload cycles in high-throughput workflows. The Z446-MP-RA tool is a workflow accessory (not a centrifuge component) that engages the bucket and supports the lift, reducing operator hand strain and minimizing the risk of dropping the loaded bucket.
Key Specifications
| SKU | Z446-MP-RA |
| Type | Bench handling tool — bucket removing aid |
| Pack quantity | 2 removing-aid units per SKU |
| Function | Engages the Z446-MP-BUK rectangular bucket for ergonomic lifting from the rotor chamber |
| Compatible bucket | Z446-MP-BUK rectangular bucket only |
| Compatible rotor | Z446-750-AC (4-place swing-out rotor body) |
| Compatible chassis | Z446, Z446-K (refrigerated), and -E voltage variants |
| Bucket loaded weight supported | Up to 640 g per bucket (Z446-MP-BUK max loading weight spec) |
| List price | $206 (2-pack) |
What This Tool Does
The Z446-MP-RA is a bench ergonomics tool, not a centrifuge component. Its function in the workflow:
- Engagement — the tool engages the rectangular bucket's geometry from above
- Lift assistance — supports the loaded bucket weight during the lift from the rotor chamber to the bench
- Bench placement — provides a secure handhold for placing the loaded bucket on the bench for unloading
- Repeated-cycle ergonomics — for workflows with many unload cycles per day, the tool reduces operator hand and wrist strain
Why a Removing Aid Matters
The Z446-MP-BUK rectangular bucket has a max loading weight spec of 640 g (bucket envelope spec). When loaded with microplates, the B15 insert (17 × 15 mL conical with sample), the B50 insert (7 × 50 mL conical with sample), or other bucket configurations at full sample volume, the total bucket+contents mass can reach the upper end of the spec — heavy enough that one-handed lifting from inside the rotor chamber becomes awkward.
The Z446-MP-RA addresses three specific workflow pain points:
- Operator hand strain in high-throughput labs running many cycles per day
- Drop risk when lifting a heavy loaded bucket from a deep rotor chamber
- Cross-contamination risk when the operator touches bucket exterior surfaces during awkward lifts
For institutional clinical-research, biobank intake, and bioprocess workflows where the Z446-MP-BUK is in routine high-cycle use, the removing aid is a worthwhile workflow accessory.
Application Profile
High-throughput rectangular-bucket workflows — institutional clinical-research, biobank intake, and bioprocess workflows running many Z446-MP-BUK cycles per day where the cumulative ergonomic burden of manual lifting matters.
Microplate-direct workflows on the rectangular bucket — when stacks of microplates loaded into the bucket reach the upper weight limit and the lift ergonomics become important.
B15 / B50 insert-loaded workflows — when 17 × 15 mL conical or 7 × 50 mL conical inserts loaded with sample reach the bucket weight ceiling.
Cold-chain workflows with repeated-cycle handling — when the workflow batches multiple consecutive cycles and operator ergonomics across the workday matters.
BSL-2 + workflows requiring containment integrity — when the workflow uses the Z446-MP-LID for hermetic containment, the removing aid reduces the risk of accidental bucket drops that would compromise containment.
Educational and teaching labs — teaching workflows where students learn to handle loaded buckets safely benefit from the ergonomic aid.
Ordering & Configuration
Bench accessory — not a centrifuge component. The Z446-MP-RA is used at the bench during bucket unload, not inside the rotor during spin operation.
Bucket-specific compatibility. The Z446-MP-RA is engineered specifically for the Z446-MP-BUK rectangular bucket geometry. It does not engage the round bucket (Z446-750-BUK) — which has its own ergonomic profile.
Z446-MP-RA ships as 2 removing-aid units. Useful pack quantity for facilities running multiple Z446-K chassis or for spare-tool inventory.
Confirm at quote: bucket pairing (Z446-MP-BUK in inventory), chassis pairing (Z446 or Z446-K), workflow context (high-throughput repeated-cycle workflows benefit most), pack count (2 units per SKU; multiple packs for facilities with multiple chassis), and lead time.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the removing-aid units.
Z446-MP rectangular-bucket workflow accessory family:
- Z446-MP-RA (this product) — Removing aid for ergonomic bucket handling
- Z446-MP-BUK — rectangular bucket (sold separately)
- Z446-MP-LID — PC lid for hermetic seal on the rectangular bucket
- Z446-MP-STK — PCR stacking adapter for the rectangular bucket microplate carrier
The Z446-MP-RA is the ergonomic-aid SKU in the rectangular-bucket family — pick when the workflow's repeated-cycle handling justifies the bench-ergonomics improvement.
