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Rotary Screw Air EndEnduro, The leading air end – built to stand the test of time

For use even under the harshest conditions

  • Highest quality air ends
  • Complete range
  • Designed for harshest conditions
  • Maximum efficiency
  • All around customer support
  • Enduro Selector Tool
  • Tamrotor rotor profile provides maximum performance and high efficiency
  • Latest manufacturing technologies guarantee high and consistent quality
  • Exceptional efficiency over wide speed range makes ENDURO air ends adaptable to a wide variety of OEM applications
  • Top class oil separation
  • Functional tilting ankle up to 22,5-30˚ degrees
  • Low specific power demand throughout the operating range

Benefits at a Glance

Enduro Air End has set new standards for air end endurance and efficiency. Numerous screw compressor manufacturers throughout the globe have selected Enduro as their first choice solution, with over 300,000 units now installed.

With its cost-effective operation in a multitude of applications, we’re proud to claim that Enduro is one of the world’s most popular and reliable air end.

Unique design - Tamrotor technology

The design of the Enduro air ends makes operation reliable and maintenance easy ensuring minimal downtime. Based on an innovative and proprietary rotor profile, Enduro is the result of 50 years of expertise from the industry leader in screw compressor technology.

The heart of it all – air end

Various names are used for the oil-injected screw air ends. As the saying goes, a dear child has many names. The most commonly used names are air end, screw air end, screw block, block, oil-lubricated air end and rotary screw. Air end is not called “the heart of it all” for nothing. 

Screw air ends are designed to produce continuous, steady air flow. By this ultimate design criterion, screw air ends are great for applications where consistent air flow is a must, for example in industrial plants and operations. In addition to the continuous operation of the screw air ends, they are reliable and durable even in harsh conditions. For example, mining and construction rigs as well as firefighting equipment manufactures choose screw air ends due to their reliability and durability.

Tamrotor air end structure

 

 

Below you can see the Tamrotor Enduro structure. Air end is not called “the heart of it all” for nothing. Air end is the part, where the actual compression takes place. Inside the air end are female and male rotors that rotate in opposite directions. They physically squeeze the air by an external force.

 

 

 

Key Facts

 

 

Enduro
Motor power
Capacity at 7 barg (101.5 psig) pressure
Pressure range
Speed range
Net weight
kW (hp)
m3/min (cfm)
barg (psig)
rpm
kg (lbs)
EN2
2.2-7.5 (3-10)
0.25-1.1 (9-39)
3-13.5 (44-196)
2500-8000
9.5 (21)
EN3
4-15 (5-20)
0.5-2.3 (18-80)
3-14 (44-205)
2500-10000
13 (29)
E6+
7.5-30 (10-40)
0.8-4.5 (28-158)
3-14 (44-205)
2000-8000
31 (68)
E12+
15-45 (20-60)
1.1-7.3 (37-258)
3-14 (44-205)
1000-6500
56 (123)
EN20SI
15-90 (20-122)
2.5-10 (90-353)
5-14.5 (733-210)
1340-5360
99 (218)
E25
22-75 (30-100)
2.6-13 (93-448)
3-14 (44-205)
1200-5600
112 (247)
EN40SI
20-135 (27-185)
3.8-15 (134-530)
5-14.5 (73-210)
1090-4360
195 (430)
EN55
30-160 (40-220)
4.7-22 (166-777)
5-13.5 (73-196)
1000-4500
350 (772)
E75
75-215 (100-300)
5.6-30 (199-1043)
3-14 (44-205)
850-4300
308 (679)
E175
132-315 (150-425)
11-54 (383-1920)
3-14 (45-205)
700-3500
724 (1596)
321mm
200-500 (250-650)
11-74 (410-2600)
3-14 (44-205)
500-3000
1080 (2381)

Note! ENDURO EN2 and EN3 are available as direct driven versions only, larger air ends are available as direct and gear driven versions. SI = Semi Integrated

Enduro Air End has set new standards for air end endurance and efficiency. Numerous screw compressor manufacturers throughout the globe have selected Enduro as their first choice solution, with over 300,000 units now installed.

With its cost-effective operation in a multitude of applications, we’re proud to claim that Enduro is one of the world’s most popular and reliable air end.

Unique design - Tamrotor technology

The design of the Enduro air ends makes operation reliable and maintenance easy ensuring minimal downtime. Based on an innovative and proprietary rotor profile, Enduro is the result of 50 years of expertise from the industry leader in screw compressor technology.

The heart of it all – air end

Various names are used for the oil-injected screw air ends. As the saying goes, a dear child has many names. The most commonly used names are air end, screw air end, screw block, block, oil-lubricated air end and rotary screw. Air end is not called “the heart of it all” for nothing. 

Screw air ends are designed to produce continuous, steady air flow. By this ultimate design criterion, screw air ends are great for applications where consistent air flow is a must, for example in industrial plants and operations. In addition to the continuous operation of the screw air ends, they are reliable and durable even in harsh conditions. For example, mining and construction rigs as well as firefighting equipment manufactures choose screw air ends due to their reliability and durability.

Tamrotor air end structure

 

 

Below you can see the Tamrotor Enduro structure. Air end is not called “the heart of it all” for nothing. Air end is the part, where the actual compression takes place. Inside the air end are female and male rotors that rotate in opposite directions. They physically squeeze the air by an external force.

 

 

 

 

 

Enduro
Motor power
Capacity at 7 barg (101.5 psig) pressure
Pressure range
Speed range
Net weight
kW (hp)
m3/min (cfm)
barg (psig)
rpm
kg (lbs)
EN2
2.2-7.5 (3-10)
0.25-1.1 (9-39)
3-13.5 (44-196)
2500-8000
9.5 (21)
EN3
4-15 (5-20)
0.5-2.3 (18-80)
3-14 (44-205)
2500-10000
13 (29)
E6+
7.5-30 (10-40)
0.8-4.5 (28-158)
3-14 (44-205)
2000-8000
31 (68)
E12+
15-45 (20-60)
1.1-7.3 (37-258)
3-14 (44-205)
1000-6500
56 (123)
EN20SI
15-90 (20-122)
2.5-10 (90-353)
5-14.5 (733-210)
1340-5360
99 (218)
E25
22-75 (30-100)
2.6-13 (93-448)
3-14 (44-205)
1200-5600
112 (247)
EN40SI
20-135 (27-185)
3.8-15 (134-530)
5-14.5 (73-210)
1090-4360
195 (430)
EN55
30-160 (40-220)
4.7-22 (166-777)
5-13.5 (73-196)
1000-4500
350 (772)
E75
75-215 (100-300)
5.6-30 (199-1043)
3-14 (44-205)
850-4300
308 (679)
E175
132-315 (150-425)
11-54 (383-1920)
3-14 (45-205)
700-3500
724 (1596)
321mm
200-500 (250-650)
11-74 (410-2600)
3-14 (44-205)
500-3000
1080 (2381)

Note! ENDURO EN2 and EN3 are available as direct driven versions only, larger air ends are available as direct and gear driven versions. SI = Semi Integrated