Reliable Belt-Driven Screw Air Solution

KSB Series Belt Drive Screw Air Compressor | Efficient & Compact Industrial Air Solution

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The KSB Series belt-drive screw air compressor provides 24/7 continuous operation with peak efficiency. Designed for small-to-medium factories, it combines a compact footprint with heavy-duty performance to ensure a stable air supply at the lowest operational cost.

Quick response within 24 hours. Provide your HP/KW requirements for a customized energy-saving solution and formal quotation.

Our Core Advantages
24/7 Technical Support
24-Hour Response Quote
GlobalCE & ISO Quality Certified
Global Logistics Coverage
Worldwide After-Sales Service
Multi-language Documentation

Power Coverage Range
5.5-22 kW
Working Pressure
0.7-1.3 MPa
Free Air Delivery (FAD)
0.62-3.6 m3/min
Air End Warranty
24 Months
Low Noise Level
62-68 dB(A)
Easy maintenance design
Low Maintenance
Smart control system
Intelligent PLC
Continuous stable operation
100% Duty
Cost-Efficiency + Industrial Reliability

Why KSB Series is the Top Choice for Workshops

The KSB series is engineered to bridge the gap between high performance and budget-friendly operation. By optimizing the belt-drive system and internal layout, we provide a durable air solution that ensures long-term stability with minimal upkeep.

Premium screw air end for 100% continuous duty cycle
Efficient belt-drive system reduces vibration and mechanical wear
Compact footprint saves valuable floor space in your facility
Intelligent PLC controller with real-time safety monitoring

Common Challenges in Small-Scale Air Supply

  • Piston compressors overheating during heavy workloads
  • High energy bills due to inefficient air delivery
  • Excessive noise levels affecting the work environment
  • Complicated maintenance requiring specialized technicians

How KSB Series Optimizes Your Production

  • Rotary screw technology allows 24/7 non-stop operation
  • Optimized air-to-power ratio reduces electricity consumption
  • Sound-dampening enclosure ensures a quiet workspace (<68dB)
  • User-friendly design for quick, low-cost routine servicing
Versatile Industrial Applications

Where the KSB Series Excels

Designed for versatility and reliability, the KSB series is the preferred air solution for small to medium-scale operations. From precision manufacturing to heavy-duty workshops, it delivers consistent performance across diverse environments.

General manufacturing and assembly linesAutomotive repair and maintenance shopsTextile and garment production facilitiesWoodworking and furniture manufacturingPackaging and printing industriesHardware and metal processing workshops
Description

Performance introduction of KSB Series oil-free screw blower

  • Integrated cabinet design, no embedded foundation required, easy installation
  • Inlet air filter, blower, motor, muffler, lubrication and cooling system, start-up and control cabinet are all built into the soundproof box
  • Forced circulation lubrication cooling system, more reliable
  • Intelligent PLC control system, touch screen; can also support remote control of upper computer, and remote monitoring of wireless Internet of Things
  • Optimized sound insulation design, making its noise as low as 73 ~ 85dB (A)
  • Humanized design, convenient and simple operation and maintenance

Operation principle and energy consumption diagram of Roots blower

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[caption id="attachment_482" align="aligncenter" width="400"]KSB Series Belt Drive Screw Air Compressor | Efficient & Compact Industrial Air Solution KSB Series Belt Drive Screw Air Compressor | Efficient & Compact Industrial Air Solution[/caption]

The corresponding states in P-V diagram are:

  1. Suction air enters the blower from atmosphere or pipe.
  2. The air is forced to the pressure end by the blower and mixed withthe air leaked back from the exhaust end.
  3. The exhaust air is further forced to the exhaust end by the blower,and the air is discharged to the pipeline.
  4. The air is completely discharged, and the air leaves the blowercavity and is completely discharged into the pipe.

 

Operating principle and energy consumption diagram of screw blower

[caption id="attachment_483" align="aligncenter" width="1024"]KSB Series Belt Drive Screw Air Compressor | Efficient & Compact Industrial Air Solution KSB Series Belt Drive Screw Air Compressor | Efficient & Compact Industrial Air Solution[/caption]

[caption id="attachment_484" align="aligncenter" width="400"]KSB Series Belt Drive Screw Air Compressor | Efficient & Compact Industrial Air Solution KSB Series Belt Drive Screw Air Compressor | Efficient & Compact Industrial Air Solution[/caption]

The corresponding states in P-V diagram are:

  1. Suction air enters the blower from atmosphere or pipe.
  2. The air is forced to the pressure side by the blower.
  3. The decrease of air volume leads to the increase of pressure.
  4. Compressed air discharge.

Performance of KSB series oil-free screw blower air end

  • Oil-free double-screw air end designed for blowers
  • Optimized profile design for higher efficiency
  •  Advanced coating technology makes the rotor gap smaller, improves the volumetric efficiency, and effectively protects the rotor for longer life
  • Adopt international 5-level precision synchronous gear and drive gear to ensure reliability and extend service life
  • Unique lubrication and oil discharge channels ensure that bearings and gears are well lubricated and cooled, while improving the efficiency of the host
  • The combination of labyrinth seal and carbon ring seal achieves oil and gas isolation between the compression chamber and the lubrication chamber, ensuring that the air is 100% oil-free
  • Because the compressed gas has no oil roller slip, the whole system does not need oil and gas separation, and the structure is simpler.

 

Performance advantages of oil-free screw blowers

The screw blower uses a pair of meshing helical rotors. During rotation, air is sucked in from the intake end, compressed, and discharged to the exhaust end. There is no lubricating oil in the compression chamber, and the male and female rotors are synchronously operated by the synchronous gear.
Compared with traditional blowers, screw blowers have the following performance advantages:

  • Low energy consumption: The screw blower is based on the principle of absolute compression, with a total efficiency of more than 75%, which is 20% -30% more energy-efficient than a Roots fan.
  • Low noise: The aerodynamic noise of the screw rotor is small, and the output is smooth, eliminating the sudden release of the internal air. The wave-shaped inlet and the air outlet minimize the air flow fluctuations. The advanced structural design reduces the mechanical noise, and the fan sound is less than traditional Blower.
  • Flexibility: multiple types of driving methods, higher exhaust pressure, lower pressure pulses
  • Low cost: The optimized structural design enables us to consume less and ensure the durability of the product. At the same time, the unit covers a small area and requires no special infrastructure to maximize customer benefits.
Product Keywords
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Configuration Planning

KSB Series Temporary Selection Table

KSB Series Temporary Selection Table
ModelSpeedAir Delivery(m³/h)Shaft Power(kw)Motor Power(kw)Working Pressure(bar)
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000 431.36/562.4/660.2/832.0/985.7/1148.5/1311.2/1473.9/1636.7 7.4/9.2/10.6/13.1/15.8/18.7/22.0/25.5/29.4 11/11/15/15/18.5/22/30/30/37 0.5
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000/5500 417.2/546.9/644.8/807.5/971.3/1134.0/1296.8/1459.5/1622.3 8.7/10.8/12.4/15.2/18.2/21.5/25.0/28.8/32.9 11/15/15/18.5/22/30/30/37/37 0.6
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000/5500 403.8/533.5/631.4/794.1/956.9/1119.6/1283.4/1446.1/1608.9 10.0/12.4/14.2/17.3/20.7/24.2/28.0/32.1/36.5 15/15/18.5/22/30/30/37/37/45 0.7
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000/5500 391.4/521.2/619.0/781.8/944.5/1107.3/1270.0/1432.7/1596.5 11.4/14.0/16.0/19.5/23.1/27.0/31.1/35.4/40.1 15/18.5/18.5/22/30/37/37/45/45 0.8
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000/5500 367.7/498.5/596.4/759.1/921.9/1084.6/1247.3/1410.1/1572.8 13.1/16.3/18.7/23.0/27.5/32.4/37.7/43.5/49.7 15/18.5/22/30/37/37/45/55/75 1.0
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000/5500 347.1/476.9/574.7/737.5/901.3/1064.0/1226.7/1389.5/1552.2 15.4/19.0/21.8/26.6/31.7/37.1/42.8/49.0/55.6 18.5/22/30/30/37/45/55/55/75 1.2
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000/5500 319.3/449.1/546.9/709.7/872.4/1035.2/1197.9/1360.6/1524.4 18.9/23.2/26.5/32.1/38.0/44.2/50.6/57.4/64.7 22/30/30/37/45/55/75/75/75 1.5
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000/5500 293.6/423.3/521.2/683.9/846.7/1009.4/1173.2/1335.9/1498.7 22.3/27.3/31.2/37.7/44.4/51.3/58.5/66.0/73.9 30/37/37/45/55/75/75/75/90 1.8
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000/5500 277.1/407.9/505.7/668.5/831.2/994.0/1156.7/1319.4/1482.2 22.3/27.4/31.4/38.2/45.3/52.8/60.7/69.1/78.0 30/37/37/45/55/75/75/90/90 2.0
KSB-20 1800/2200/2500/3000/3500/4000/4500/5000/5500 252.6/371.8/468.7/631.4/795.2/957.9/1120.6/1283.4/1446.1 22.3/33.1/37.8/45.7/54.0/62.5/71.3/80.6/90.3 30/37/45/55/75/75/90/90/110 2.5
KSB-40 1800/2200/2500/3000/3500 903.3/1157.7/1348.3/1666.5/1983.8 14.7/18.4/21.4/26.8/32.8 18.5/22/30/30/37 0.5
KSB-40 1800/2200/2500/3000/3500 879.6/1134.0/1324.6/1642.9/1961.1 17.3/21.6/24.9/30.9/37.5 22/30/30/37/45 0.6
KSB-40 1800/2200/2500/3000/3500 859.0/1113.4/1304.1/1622.3/1939.5 19.9/24.7/28.4/35.1/42.2 30/30/37/45/55 0.7
KSB-40 1800/2200/2500/3000/3500 838.4/1092.8/1284.4/1601.7/1920.0 22.5/27.8/32.0/39.2/46.9 30/37/37/45/55 0.8
KSB-40 1800/2200/2500/3000/3500 802.4/1056.8/1248.4/1565.6/1883.9 26.0/32.3/37.3/46.0/55.6 30/37/45/55/75 1.0
KSB-40 1800/2200/2500/3000/3500 770.4/1024.9/1215.4/1533.7/1850.9 30.4/37.7/43.3/53.1/63.6 37/45/55/75/75 1.2
KSB-40 1800/2200/2500/3000/3500 726.2/980.6/1171.1/1489.4/1806.6 37.1/45.7/52.3/63.7/75.7 45/55/75/75/90 1.5
KSB-40 1800/2200/2500/3000/3500 686.0/940.4/1130.9/1449.2/1767.5 43.8/53.8/61.4/74.5/88.0 55/75/75/90/110 1.8
KSB-40 1800/2200/2500/3000/3500 661.3/915.7/1106.2/1424.5/1741.7 43.8/54.2/62.2/76.2/91.0 55/75/75/90/110 2.0
KSB-40 1800/2200/2500/3000/3500 603.6/858.0/1049.6/1366.8/1685.1 52.9/65.1/74.5/90.5/107.3 75/75/90/110/132 2.5
KSB-40 4000/4500 2302.1/2620.3 39.5/47.0 45/55 0.5
KSB-40 4000/4500 2279.4/2596.6 44.7/52.7 55/75 0.6
KSB-40 4000/4500 2257.8/2576.0 49.9/58.4 75/75 0.7
KSB-40 4000/4500 2238.2/2555.4 55.2/64.1 75/75 0.8
KSB-40 4000/4500 2202.1/2519.4 66.0/77.4 75/90 1.0
KSB-40 4000/4500 2169.2/2487.5 74.9/87.1 90/110 1.2
KSB-40 4000/4500 2124.9/2443.2 88.4/101.8 110/132 1.5
KSB-40 4000/4500 2084.7/2403.0 102.0/116.8 132/132 1.8
KSB-40 4000/4500 2060.0/2378.3 106.8/123.8 132/160 2.0
KSB-40 4000/4500 2003.4/2320.6 124.9/143.5 160/160 2.5
KSB-70 1800/2200/2500/3000/3500/3600/3800 2005.4/2539.0/2938.6/3605.0/4272.4/4405.3/4672.1 31.4/39.7/46.4/58.8/72.9/75.9/82.2 37/45/55/75/90/90/90 0.5
KSB-70 1800/2200/2500/3000/3500/3600/3800 1967.3/2500.8/2900.5/3567.9/4234.3/4388.2/4635.0 36.7/46.1/53.5/67.1/82.2/85.4/92.1 45/55/75/75/90/110/110 0.6
KSB-70 1800/2200/2500/3000/3500/3600/3800 1932.3/2465.8/2866.5/3532.9/4200.3/4333.2/4600.0 42.1/52.5/60.7/75.4/91.6/95.1/102.1 55/75/75/90/110/110/132 0.7
KSB-70 1800/2200/2500/3000/3500/3600/3800 1900.4/2433.9/2833.5/3501.0/4167.4/4301.3/4568.1 47.4/58.9/67.9/83.8/101.1/104.7/112.2 55/75/90/110/110/132/132 0.8
KSB-70 1800/2200/2500/3000/3500/3600/3800 1841.6/2374.2/2774.8/3442.3/4108.7/4242.6/4508.3 54.9/68.8/79.9/99.8/121.9/128.6/136.3 75/90/90/110/132/160/160 1.0
KSB-70 1800/2200/2500/3000/3500/3600/3800 1788.1/2321.6/2721.3/3388.7/4055.1/4189.0/4455.8 64.0/79.6/91.9/113.8/137.5/142.6/152.9 75/90/110/132/160/160/200 1.2
KSB-70 1800/2200/2500/3000/3500/3600/3800 1716.0/2248.5/2649.2/3316.6/3983.0/4115.9/4382.7 77.6/95.9/110.1/135.0/161.4/166.9/178.2 90/110/132/160/200/200/200 1.5
KSB-70 1800/2200/2500/3000/3500/3600/3800 1650.1/2183.6/2583.2/3250.7/3917.1/4051.0/4317.8 91.2/112.2/128.4/156.3/185.6/191.7/203.9 110/132/160/200/250/250/250 1.8
KSB-70 1800/2200/2500/3000/3500/3600/3800 1609.9/1876.7/2543.1/3210.5/3876.9/4010.8/4277.6 92.9/104.1/133.4/165.0/199.3/208.5/221.3 110/132/160/200/250/250/250 2.0
KSB-70 1800/2200/2500/3000/3500/3600/3800 1516.2/1782.9/2450.4/3116.8/3784.2/3917.1/4183.9 111.4/124.4/158.1/193.6/231.3/239.2/255.2 132/160/200/250/315/315/315 2.5
KSB-100 1800/2200/2500/2800/3000 4071.6/5111.9/5893.7/6676.5/7195.6 64.7/83.9/100.1/118.1/131.1 75/110/110/132/160 0.5
KSB-100 1800/2200/2500/2800/3000 4011.9/5052.2/5836.0/6615.7/7137.9 74.9/95.8/113.3/132.4/146.3 90/110/132/160/160 0.6
KSB-100 1800/2200/2500/2800/3000 3958.3/4998.6/5780.4/6563.2/7083.3 85.0/107.9/126.7/147.0/161.5 110/132/160/160/200 0.7
KSB-100 1800/2200/2500/2800/3000 3907.8/4949.2/5728.9/6512.7/7032.8 95.3/120.0/140.1/161.7/176.9 110/132/160/200/200 0.8
KSB-100 1800/2200/2500/2800/3000 3815.1/4857.5/5638.2/6420.0/6941.2 111.4/142.0/167.2/194.6/214.2 132/160/200/250/250 1.0
KSB-100 1800/2200/2500/2800/3000 3731.7/4774.1/5554.8/6336.6/6857.7 128.5/162.2/189.5/218.8/239.5 160/200/250/250/315 1.2
KSB-100 1800/2200/2500/2800/3000 3618.4/4660.8/5441.5/6223.3/6744.4 154.4/192.9/223.4/255.8/278.4 200/250/250/315/315 1.5
KSB-100 1800/2200/2500/2800/3000 3516.4/4557.8/5339.5/6121.3/6642.5 180.5/223.8/257.9/293.4/317.9 200/250/315/355/355 1.8
KSB-100 1800/2200/2500/2800/3000 3452.6/4492.9/5276.7/6057.4/6578.6 185.5/233.3/272.0/313.0/339.8 250/315/315/355/400 2.0
KSB-100 1800/2200/2500/2800/3000 3307.3/4343.7/5130.4/5912.2/6432.4 220.7/274.9/317.9/361.4/392.3 250/315/355/400/450 2.5

Frequently Asked Questions

The KSB series offers 100% continuous duty cycle, higher energy efficiency, and significantly lower noise levels. Unlike piston compressors, it provides a stable air flow and has a much longer service life for industrial applications.

Yes. Our KSB series uses high-quality, heavy-duty belts with an automatic tensioning system. This design ensures efficient power transmission, reduces vibration, and makes maintenance simpler and more cost-effective.

The KSB series features a fully enclosed sound-dampening cabinet. The noise level is typically between 62-68 dB(A), which is quiet enough for installation near the point of use without disturbing the work environment.

Due to its compact design and reliable output, it is ideal for small to medium-sized workshops, textile factories, packaging lines, automotive repair shops, and furniture manufacturing.

The integrated PLC controller monitors real-time pressure, temperature, and maintenance schedules. It prevents dry running and overheating, ensuring the compressor operates only when needed to save electricity costs.

We recommend a basic service (oil and filter changes) every 2,000 to 3,000 hours. The KSB’s internal layout is designed for quick access, allowing your team to perform routine maintenance in minutes.

Absolutely. We offer "all-in-one" solutions that include the KSB compressor, air receiver tank, refrigerated air dryer, and precision filters to ensure you get clean, dry, and high-quality compressed air.

KSB Series Belt Drive Screw Air Compressor | Efficient & Compact Industrial Air Solution
Contact for Price