Grundfos SMG.25.71 .263.5.1B Submersible mixers with planetary gearbox 98787783
Axial force: 1020 N | Thrust-to-power ratio: 0.413 | Rated current: 5.3 A | Nominal flow rate: 449 l/s | Propeller diameter: 710 mm
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Grundfos SMG.25.71 .263.5.1B 98787783 Submersible wastewater pumps
Product code: 98787783
EAN Number: 5712601392112
The Grundfos range of horizontal submersible SMG mixers is designed for applications involving the mixing, that is the homogenisation and suspension, of low to medium-viscosity liquids. The mixers are equipped with a gearbox and an energy-efficient propeller.
The squirrel-cage induction motor is protected against overload by means of three bi-metallic thermal switches (PTO) in the motor windings. The products are equipped with IE3 motor components.
To prevent ingress of the surrounding liquid, the SMG mixers are provided with two radial FKM rubber lip seals in combination with a ceramic wear ring and a mechanical shaft seal made of silicon carbide/silicon carbide or tungsten carbide/tungsten carbide, depending on size.
The secondary seal between the gearbox and the motor is made of carbon/aluminium oxide.
The oil-filled gearbox is monitored for the ingress of water by a leak sensor incorporated as standard in the gearbox. The sensor can trigger an alarm signal and/or switch off the motor by means of an external Grundfos relay, type ALR-20/A.
The gearbox incorporates tapered roller bearings absorbing the axial force from the propeller.
Motors range from 0.9 to 18.5 kW.
A wide range of accessories made of stainless steel AISI 304/316 ensure easy installation and long trouble-free operation.
| General | EAN number | 5712601392112 |
| Product No | 98787783 | |
| Material | Hub | AISI 1.4301 |
| Motor | AISI EN-GJL-250 | |
| Paint thickness | 450 micrometre | |
| Propeller | 1.4301 | |
| Secondary shaft seal | SIC/SIC | |
| Pump | Axial trust force | 1020 N |
| Curve tolerance | ISO9906:2012 3B | |
| Gear ratio | 5.600 | |
| Mean velocity | 1.13 m/s | |
| Number of propeller blades | 2 | |
| Primary shaft seal | 2 RADIAL LIP SEALS | |
| Propeller diameter | 710 mm | |
| Propeller speed | 263 1/min | |
| Rated flow | 449 l/s | |
| Thrust to power | 0.413 | |
| Tip speed | 9.78 m/s | |
| Connect | Fits column profile tube, size | 80/80 mm |
| Maximum installation depth | 20 m | |
| Control | Moisture sensor | without moisture sensors |
| Water-in-oil sensor | with water-in-oil sensor | |
| Motor | Cos phi - p.f. at 1/2 load | 0.59 |
| Cos phi - p.f. at 3/4 load | 0.73 | |
| Cos phi - power factor | 0.81 | |
| Enclosure class (IEC 34-5) | IP68 | |
| Ex-protection standard | PTO (THERMAL SWITCH) | |
| Explosion proof | N | |
| Insulation class (IEC 85) | H | |
| Length of power cable | 10 m | |
| Mains frequency | 50 Hz | |
| Motor efficiency at 1/2 load | 85.9 % | |
| Motor efficiency at 3/4 load | 87.7 % | |
| Motor efficiency at full load | 87.9 % | |
| Number of poles | 4 | |
| Power cable type | S1BN8-F 11G1.5 | |
| Power input - P1 | 2.8 kW | |
| Power input Act | 2.47 kW | |
| Power plug | No plug | |
| Rated current | 5.3 A | |
| Rated power - P2 | 2.5 kW | |
| Rated speed | 1450 1/min | |
| Rated voltage | 3 x 400-415 V | |
| Start. method | star/delta | |
| Starting current | 47 A | |
| Voltage tolerance | +6/-10 % | |
| Medium | Liquid temperature range | 5 .. 40 °C |
| pH-value range | 4-10 | |
| Other | Herkunftsland | |
| Net weight | 77 kg | |
| Zolltarif Nr. | 84798200 |