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Description
IKA RW 28 Digital Overhead StirrerOverview 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
Overview
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
Key Attributes
| Maximum volume (L): | 80 |
| Minimum Volume (L): | N/A |
| Speed max (rpm): | 1,400 |
| Speed min (rpm): | 60 |
| Max temperature (◦C): | N/A |
| Plate: | N/A |
| Plate material: | N/A |
| Torque max (Ncm): | 900 |
| Controls: | Digital |
| Timer: | No |
| Programmable: | No |
| Reverse rotation: | No |
| Warranty (years): | 2 |
| Weight (lbs): | 16.5 |
| Dimensions Width (in): | 4.8 |
| Dimensions Height (in): | 14.3 |
| Dimensions Length (in): | 9.9 |
Manufacturer Specifications
| Stirring quantity max. per stirring position (H2O) | 80 l |
| Motor rating input | 220 W |
| Motor rating output | 94 W |
| Speed display | LED |
| Speed range | 60 - 1400 rpm |
| Viscosity max. | 50000 mPas |
| Output max. at stirring shaft | 90 W |
| Permissible ON time | 100 % |
| Torque max. at stirring shaft | 900 Ncm |
| Torque max. at stirring shaft at 60 1/min (overload) | 1144 Ncm |
| Torque max. at stirring shaft at 100 1/min | 900 Ncm |
| Torque max. at stirring shaft at 1.000 1/min | 86 Ncm |
| torque I max. | 900 Ncm |
| torque II max. | 300 Ncm |
| Speed range I (50 Hz) | 60 - 400 rpm |
| Speed range II (50 Hz) | 240 - 1400 rpm |
| Speed range I (60 Hz) | 72 - 480 rpm |
| Speed range II (60 Hz) | 288 - 1680 rpm |
| Speed control | stepless |
| Setting accuracy speed | 1 ±rpm |
| deviation of speed measurement | 10 ±rpm |
| Stirring element fastening | chuck |
| Chuck range min. diameter | 1 mm |
| Chuck range max. diameter | 10 mm |
| Hollow shaft, inner diameter | 10.5 mm |
| Hollow shaft (push-through - when stopped) | yes |
| Fastening on stand | extension arm |
| Extension arm diameter | 16 mm |
| Extension arm length | 145 mm |
| Torque display | no |
| Nominal torque | 9 Nm |
| housing material | alu-cast coating / thermoplastic polymer |
| clean room qualified | no |
| explosion proofed | no |
| Noise without element | 62.5 dB(A) |
| Dimensions (W x H x D) | 123 x 364 x 252 mm |
| Weight | 7.5 kg |
| Permissible ambient temperature | 5 - 40 °C |
| Permissible relative humidity | 80 % |
| Protection class according to DIN EN 60529 | IP 40 |
| RS 232 interface | no |
| USB interface | no |
| Analog output | no |
| Voltage | 220 - 240 / 115 / 100 V |
| Frequency | 50/60 Hz |
| Power input | 200 W |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 2376 reviews
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Product Reviews
★★★★★ 5
Great chew toy- probably best for medium to normal size large dogs😀
Pattern Name: Large, Pattern Name: Large
We purchased this toy for our 140lb Akita. He loved playing with it and really loved the peanut butter inside. Unfortunately he is a big persistent/determined dog and was able to chew the toy to get every bit of peanut butter out of it !
I think it is a great product for a little more mellow dogs!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 21, 2025
★★★★★ 5
Fun dog peanut butter toy
Pattern Name: Small
My dog loves this peanut butter toy! It takes a little to fill but i keep the dog peanut butter in the refrigerator which makes it pretty easy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2026
★★★★★ 5
Survived a pitbull!
Pattern Name: Medium
I have bought so many fillable toys for my dog that didn't last. This is the only one that has not been chewed up by my pitbull. I put soft treats in it and squish them down. Keeps him busy and happy.
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Reviewed in the United States on December 9, 2025
★★★★★ 4
Inside has grooves
Pattern Name: Medium, Pattern Name: Medium
My old one was perfect. I ordered a new one but this one has grooves or ridges inside. The last one was smooth inside making it easy to clean. The new one is a real pain to clean.
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Reviewed in the United States on April 25, 2024
★★★★★ 5
Nice quality; perfect for med-big dogs
Pattern Name: Large
I like the quality for the price (cheaper than Kong) for this item. Perfect for a peanut butter treat (room temp or frozen). Washes easily in the dishwasher. Perfect size for medium or large dogs. Was not tested with a chewer.
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Reviewed in the United States on July 11, 2024