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Hermle Z446K Refrigerated Centrifuge

Net 30 Terms and Financing Available

Our Price: $4,995.00

Condition: Fully Recertified and Tested to Perform at Manufacturer Specifications
Warranty: 180-Day Full Parts and Labor (Click for Info)
Typically Ships Within: 3 to 5 Business Days
Included Documentation: NIST Centrifuge Calibration and Preventative Maintenance Report

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Quantity in Stock:1

Product Code: HM-Z446K

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Description

Recertification Protocol

Technical Specification Sheet

Hermle Z446K Refrigerated Centrifuge

The Hermle Z446K Refrigerated Centrifuge series offers the highest capacity of any benchtop Hermle centrifuge model. With air-craft grade, premium alloy construction, the 4 x 500ml Swing Bucket Rotor can withstand centrifugal forces upwards of 4,211 x g. Advanced microprocessor controls allow for instant rotor identification, which automatically converts the rotational speed to the relevant g-force (RCF), preventing the user from setting a speed above the capabilities of the installed rotor. In addition to retrieving saved programs, the easy-to-use front panel can adjust acceleration and deceleration rates and change the end of run alarm tone. Rotor exchange is simple and requires less than one minute. As soon as the rotor is placed on the motor shaft, the identification process activates and the installed rotor code is displayed on the backlit LCD display. The included 221.08 V04 Swing Bucket Rotor reaches a maximum speed of 4,500 RPM and a maximum RCF of 4,211 x g.

All of our equipment is in excellent condition and will be fully tested to perform at factory specifications before being shipped.

Please confirm this rotor meets your application needs and request a different rotor, if necessary. Available rotors can be found in our Rotor Compatibility Guide.

INCLUDED:
The Hermle Z446K Refrigerated Centrifuge includes:

> 221.08 V04 Swing Bucket Rotor and Buckets
> Set of 12 x 15ml Adapters
> Set of 5 x 50ml Adapters
> NIST Centrifuge Calibration and Preventative Maintenance Report
> Power Cord
> Full 180 Day Parts and Labor Warranty

Hermle Z446K Refrigerated Centrifuge Specifications

Maximum Speed	16,000 RPM (4,500 RPM with included rotor)
Maximum RCF	26,331 x g (4,211 x g with included rotor)
Maximum Capacity	4 x 750ml (4 x 500ml with included rotor)
Temperature Range	-20°C to 40°C
Timer	Up to 99 hours 59 minutes, with continuous run (hold) and pulse modes
Acceleration Rates	9
Deceleration Rates	9
Number of Compatible Rotors	15
Display	LCD
Program Storage	Up to 99 programs
Noise Level	< 65 dB(A)
Dimensions (W x D x H)	28.7 x 26.4 x 15.4 in. (73 x 67 x 39 cm)
Weight	244.7 lb. (111 kg)
Electrical Requirements	120V, 50/60Hz, 15A, 1550W

Preventative Maintenance Performed on The Hermle Z446K Refrigerated Centrifuge

Door Latch Assembly Checked for Full Function
Door Hinges are Checked and Lubed as Needed
Drive Belt is Checked for Rips and Tears and Replaced if Needed
Rotors and O-rings are Lubed as Needed
Lamps and Display are Checked and Replaced if Dim
Line Cord is Checked for Signs of Fray or Damage and Replaced Accordingly
Internal Circuitry is Checked for Faulty/Shorted Components and Replaced Accordingly

Downloads

Technical Specification Download

Operator's Manual Download

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Centrifuge Inspection and Recertification Checklist

Confirm the power supply output voltages match specified requirements for stable distribution to all internal components
Measure and verify voltages at PCB test points to ensure accurate power delivery and circuit integrity
Confirm rotor compatibility with the centrifuge model and check that rotor detection systems recognize the rotor type
Inspect the exterior for any cosmetic or structural damage that could affect performance or safety
Check the door mechanism alignment to ensure secure and smooth opening and closing
Inspect and replace the gas strut with an OEM part to maintain proper door support and safety
Examine the rotor chamber bowl for dents or damage and replace as needed to ensure safe operation
Replace and confirm full functionality of all lid lock switches to maintain secure closure
Inspect and lubricate the door lock mechanism, applying grease to the lid lock rail for smooth operation
Test compressor functionality (if applicable) to ensure proper operation and consistent temperature control
Conduct an 8-12 hour cycle test to validate consistent performance over prolonged use
Confirm rotor motor stability, check for unusual noise, and assess mechanical integrity during operation
Inspect the condensation drain and clear any clogs to prevent moisture buildup in the rotor chamber
Verify RPM accuracy using an NIST-traceable tachometer and perform calibration as necessary
Check the centrifuge error log to ensure zero recorded issues, confirming system reliability

Technician Inspection and Recertification Checklist: Centrifuges

The Following Checklist Is to Be Performed on All Incoming and Outgoing Pieces of Equipment

Task	Completed?	Remarks?
Confirm power supply output voltages match specified requirements	Completed
Measure and verify voltages at PCB test points for accuracy	Completed
Confirm rotor compatibility and detection for proper identification	Completed
Inspect exterior for cosmetic or structural damage	Completed
Check door mechanism alignment for secure opening and closing	Completed
Inspect and replace gas strut with OEM part as needed	Completed
Examine rotor chamber for dents or damage and replace if necessary	Completed
Replace and confirm functionality of all lid lock switches	Completed
Lubricate door lock mechanism and lid lock rail for smooth operation	Completed
Test compressor (if applicable) for proper operation and cooling	Completed
Run 8-12 hour cycle test to ensure consistent performance	Completed
Check rotor motor for stability, noise, and integrity	Completed
Inspect and clear condensation drain to prevent buildup	Completed
Verify RPM accuracy with NIST traceable tachometer and calibrate	Completed
Check centrifuge error log for zero recorded issues	Completed