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RW 28 digital — main photograph
IKAAvailability: Supplied to order

RW 28 digital

Reference 0005040000

RW 28 digital laboratory stirrer from IKA — supplied, installed and commissioned by AxiTech, with preventive maintenance, calibration, troubleshooting, repair and genuine spare parts.

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At a glance

Reference
0005040000
Category
Shakers, Stirrers & Mixers

Overview

RW 28 digital Powerful, mechanically controlled laboratory stirrer designed for highly viscous applications for quantities up to 80 l (H2O). It is suitable for intensive mixing for use in laboratories and pilot plants. The stirrer comes equipped with a protection for overheating of the motor by means of self-locking temperature limiter. Additionally, to secure bowls, a stirring shaft protection and clamping fixture are optionally available. Digital speed display Infinitely adjustable speed from 60 to 1400 rpm in two speed ranges Push-through agitator shafts Overload protection Error code display Robust, ergonomic design Quiet operation With constant power-drive Scope of delivery RW 28 digital Chuck key

Maintenance contract — AxiTech provides planned preventive maintenance for RW 28 digital from IKA: scheduled visits, safety checks, periodic calibration and a documented service report, backed by a contractual response time.

Troubleshooting, repair and spare parts — our shakers, stirrers & mixers engineers diagnose and repair RW 28 digital on site or in the workshop, fit genuine spare parts and recommission the equipment after performance verification.

Features

  • Digital speed display
  • Infinitely adjustable speed from 60 to 1400 rpm in two speed ranges
  • Push-through agitator shafts
  • Overload protection
  • Error code display
  • Robust, ergonomic design
  • Quiet operation
  • With constant power-drive
  • RW 28 digital
  • Chuck key

Technical specifications

Specifications
Weight
7.5 kg
Voltage
220 - 240 V
Frequency
50/60 Hz
Power input
220 W
Speed range
60 - 1400 rpm
Speed control
mechanical
Speed display
LED
Torque I max.
900 Ncm
Nominal torque
9 Nm
Torque II max.
300 Ncm
Viscosity max.
50000 mPas
Housing material
alu-cast coating / thermoplastic polymer
Speed adjustment
stepless
Fastening on stand
extension arm
Motor rating input
220 W
Motor rating output
90 W
Permissible ON time
100 %
Chuck range diameter
1 - 10 mm
Extension arm length
145 mm
Noise without element
62.5 dB(A)
Speed range I (50 Hz)
60 - 400 rpm
Speed range I (60 Hz)
72 - 480 rpm
Dimensions (W x H x D)
123 x 364 x 252 mm
Extension arm diameter
16 mm
Setting accuracy speed
±1 rpm
Speed range II (50 Hz)
240 - 1400 rpm
Speed range II (60 Hz)
288 - 1680 rpm
Stirring element fastening
chuck
Hollow shaft, inner diameter
10.5 mm
Output max. at stirring shaft
90 W
Permissible relative humidity
80 %
Torque max. at stirring shaft
900 Ncm
Deviation of speed measurement
±10 rpm
Permissible ambient temperature
5 - 40 °C
Torque max. at stirring shaft at 100 rpm
900 Ncm
Torque max. at stirring shaft at 1000 rpm
86 Ncm
Hollow shaft (push through when stopped)
yes
Protection class according to DIN EN 60529
IP 40
Stirring quantity max. per stirring position (H2O)
80 l
Torque max. at stirring shaft at 60 1/min (overload)
1144 Ncm
Service coverage

AxiTech maintains, repairs and supplies this equipment for hospitals, clinics, laboratories and imaging centres.

Maintenance contracts for RW 28 digital

AxiTech provides preventive maintenance contracts for RW 28 digital. Each contract fixes a schedule of planned visits in which our biomedical engineers inspect the equipment, replace wear parts before they fail, and verify that it still performs inside the manufacturer’s tolerances.

Every visit includes calibration and performance verification, and closes with a documented maintenance report you can present during an accreditation audit. Spare-parts availability and a guaranteed response time are written into the contract, so a breakdown never leaves a department waiting for an answer.

Plan at least one preventive maintenance visit per year, and a second visit for equipment in continuous or critical use.

  • Planned preventive maintenance visits at a fixed interval
  • Calibration and performance verification against the manufacturer’s specifications
  • A documented maintenance report after every intervention
  • Guaranteed availability of spare parts and consumables
  • A contractual response time when the equipment fails

Discover our maintenance contracts

Planned preventive maintenance and calibration under contract

Troubleshooting and repair for RW 28 digital

When RW 28 digital fails, our engineers start with a structured diagnostic: error codes, electrical and mechanical checks, and a functional test against the equipment’s own specification. That tells us whether the fault is a consumable, a worn part or a board-level failure before any part is ordered.

Straightforward faults are repaired on site so the department loses as little time as possible. Anything that needs a workbench, a full strip-down or a specialised spare part goes to our workshop and comes back only after a complete post-repair test and, where the equipment requires it, recalibration.

Faults we see most often on this type of equipment

The faults we see most often are worn moving parts, power-supply and control-board failures, sensors that have drifted out of tolerance, and fluid or air paths that have become blocked or contaminated.

Discover our troubleshooting and repair service

Diagnostics, corrective repair and spare parts in the workshop
Troubleshooting

How to troubleshoot RW 28 digital

Work through these checks before you escalate. They are the same first-line sequence our biomedical engineers run on arrival, and they either clear the fault or narrow it down enough that the intervention starts with the right spare part in the van.

  1. Capture the fault before you touch anything: write down the exact error code or message, the serial number from the rating plate, what the operator was doing and whether the fault clears on a restart.

  2. Confirm the power supply end to end — wall outlet, mains lead, fuse and any UPS or stabiliser in between. A device that is intermittently dead has a supply fault far more often than an internal one.

  3. Check the consumables and wear parts — filters, seals, tubing, probes, batteries — and note when each was last replaced. Anything past its service interval is the first suspect.

  4. Reproduce the fault once, deliberately, and record the sequence: what the operator did, what the device displayed, and whether a full power cycle clears it.

  5. If the fault is still there, escalate with the evidence. Send AxiTech the model, serial number, error code and the checks you have already run, and an engineer will come back with a diagnosis, a repair quote and a spare-parts lead time for RW 28 digital.

What to send us when you report the fault

  • Manufacturer, model and serial number, from the rating plate
  • The exact error code or message, and the screen it appears on
  • When the fault started, how often it occurs and what triggers it
  • A photograph of the display or of the fault, and the last maintenance report

If the fault survives all five steps, stop using RW 28 digital and open a repair request. Continuing to run equipment through a fault it cannot clear turns a component failure into a board-level one, and on devices used for diagnosis or therapy it puts the result — and the patient — in doubt.

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Buying and installing RW 28 digital

AxiTech supplies RW 28 digital together with the accessories and consumables it needs to enter service. We handle importation, delivery and installation, then commission the equipment on site so that it is verified against its specification before the first patient or the first sample.

Installation is followed by training for the users and for your biomedical team, warranty registration, and — if you want it — a maintenance contract that takes over the day the warranty ends, so the equipment never spends a period without planned service.

Discover our equipment sales service

Delivery, installation, commissioning and user training
Questions we are asked

Frequently asked questions about IKA RW 28 digital

Yes. AxiTech services RW 28 digital, either under a maintenance contract or as a one-off intervention. Our biomedical engineers cover preventive maintenance, calibration, corrective repair and spare-parts supply for this equipment.

Related equipment

Other IKA equipment we supply, install and maintain.