Screw compressor WALTER SK 45 KSP power input 45 kW, air delivery 7.51 m³/min at 8 bar, direct drive, fixed speed, 7-year warranty

Code: SK-45-KSP
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Šroubový kompresor WALTER SK 45 KSP
€0,05 / pcs €0,04 excl. VAT Measure price:
up to 14 days
Delivery to:
02.11.2026
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The most powerful model with a housing of 1,500 × 1,030 mm for operation with continuous air consumption. It weighs 690 kg, G 1½″ connection, noise level 66 dB(A).

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Product detailed description

Screw compressor WALTER SK 45 KSP, the most powerful model in the 1,500 × 1,030 mm housing

The SK 45 KSP is the most powerful of three models in the 1,500 × 1,030 × 1,280 mm housing and the last in the range with a G 1½″ connection. At 8 bar it delivers 7.51 m³/min, at 10 bar 7.1, and at 13 bar 6.05 m³/min.

It weighs 690 kg, i.e. 99 kg more than the SK 37 KSP and 172 kg more than the SK 30 KSP. Noise level of 66 dB(A) is the same for all three.

7.51m³/min air delivery at 8 bar
45kW motor input power
66dB(A) noise level
8–13bar operating pressure

Configuration of this machine

  • Screw element coupled directly to the motor · fixed speed without inverter · three-stage oil separation
  • Air delivery of 7.51 m³/min at 8 bar, 7.1 at 10 bar and 6.05 at 13 bar
  • Housing shared with the SK 30 KSP and SK 37 KSP, weight 690 kg
  • Connection G 1½″, noise level 66 dB(A)
  • Power supply 400 V / 3 / 50 Hz, WALTER CONTROLLER control unit
Piping and oil distribution in the housing of the WALTER SK KSP compressor
Piping and oil lines in the housing
Electric motor with cooling fins in the WALTER SK KSP compressor
Electric motor with cooling fins

Who it suits

Suitable for operation with higher continuous demand that still fits into the 1,500 × 1,030 mm housing. The next size up, in a 2,158 × 1,331 × 1,600 mm housing with a G 2″ connection, is the SK 55 KSP.

When to choose a different model

Two-stage compression

More air from the same power input is delivered by the two-stage SF 45 DSP: at 8 bar up to 9.14 m³/min, i.e. 22% more. However, it is in a larger housing (2,132 × 1,318 × 1,600 mm) with a G 2″ connection and weighs 1,144 kg.

Demand fluctuates

The SF 45 KSP has an inverter at the same power input. The 1,500 × 1,030 × 1,280 mm housing, weight of 690 kg, and maximum air delivery of 7.51 m³/min at 8 bar are the same, while the air delivery is smoothly regulated within the range of 2.95–7.51 m³/min.

What the parameters imply — calculated values

0.167m³/min of air delivery per 1 kW of power input at 8 bar
81%of air delivery at 8 bar remains at 13 bar pressure

The values are calculated from the maximum air delivery at 8 bar and serve for comparing models with each other, not as a guaranteed value.

Frequently asked questions

Why doesn't the SK 45 KSP have an inverter?
It is designed for constant demand, where an inverter would not compensate for anything. The airend is directly coupled to the motor and the speed is fixed, which keeps the design simple.
How much air does the SK 45 KSP deliver at 13 bar?
At 13 bar it delivers 6.05 m³/min, i.e. 81% of the air delivery at 8 bar (7.51 m³/min).

The machine is covered by a 7-year warranty on the entire machine. Warranty conditions, maintenance, and a comparison of all 17 models can be found in the category WALTER SK KSP screw compressors: direct drive without losses.

Ventilek’s advice

The 1,500 × 1,030 mm cabinet ends with the SK 45 KSP. The next size brings a significantly larger cabinet, so it is worth taking this into account when planning the compressor room.

Additional parameters

Category: Air compressors
Warranty: 7 let
Compressor type: Screw compressor
Pressure: 8 bar, 10 bars, 13 bar
Air delivery: 7 510 l/min
Pressure vessel volume: It isn't
Connecting: 1 1/2"
Motor power: 45 kW
Mains voltage: 400/50 V/Hz
Lubrication: Oleic
Noise: 66 dB(A)
Weight: 690 kg
Engine: Electric
Drive: Direct
Air dryer: No
Retrieved from: Professional
Development: Stationary
Inverter: No

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