Replacement Screw Compressor Air End for Sullair Compressors
Looking for a replacement for Sullair air end 88250118-613?
We supply an OEM-compatible replacement air end for suitable Sullair rotary screw compressor applications. The air end is the main compression assembly of a screw compressor, and selecting the correct replacement is essential for maintaining compressor performance and mechanical reliability.
If your existing air end is showing abnormal noise, excessive vibration, reduced air delivery, high operating temperature, or suspected internal wear, it may require inspection or replacement.
Not sure whether 88250118-613 fits your compressor? Send us your compressor model, serial number, nameplate, and photos of the existing air end. We can help verify the application before you order.
Product Overview
Sullair Air End 88250118-613
The Sullair air end 88250118-613 is a screw compressor air end identified by Sullair part number 88250118-613 and intended for compatible rotary screw compressor applications.
The air end performs the primary compression process inside a rotary screw compressor. The compressor motor drives the air end, while the internal screw elements compress incoming air and deliver it to the compressed air system.
Because the air end operates continuously under mechanical load, temperature, pressure, and lubrication conditions, its internal components can gradually wear over time.
Depending on the failure condition, problems such as bearing wear, rotor damage, lubrication failure, contamination, or mechanical misalignment can affect compressor performance.
When the existing air end has reached the end of its service life, replacing the air end can be considered instead of replacing the complete compressor, provided that the motor, cooling system, controls, lubrication system, and other major components remain serviceable.
| Item | Information |
|---|---|
| Brand | Sullair |
| Part Number | 88250118-613 |
| Product | Screw Compressor Air End |
| Application | Compatible Sullair Rotary Screw Compressors |
| Replacement Type | OEM-Compatible Replacement |
| Condition | New |
Technical Specifications
88250118-613 Air End Technical Data
For an air end replacement, technical specifications are important because apparently similar air ends may have different mechanical configurations.
| Parameter | Specification | |
|---|---|---|
| Part Number | 88250118-613 | |
| Air End Model | Sullair Air End 88250118-613 | |
| Compatible Compressor Model | Sullair WS75 | |
| Motor Power | 75kW/100HP | |
| Air Delivery | 5-10 days | |
| Speed | 1485-1780r/min | |
| Weight | 80kg | |
| Overall Dimensions | 55*35*30 |
Why These Specifications Matter
When selecting a compressor air end, part number identification should be combined with mechanical and operating information.
Important factors may include:
Compressor configuration
Motor power
Operating pressure
Rotation direction
Shaft configuration
Mounting dimensions
Oil and air connections
A replacement air end should therefore be verified against the original compressor before installation.
Compatible Models & OEM Cross Reference
Sullair 88250118-613 Compatibility
The primary identification reference for this product is:
Sullair OEM Part Number: 88250118-613
| Brand | OEM Part Number | Component |
|---|---|---|
| Sullair | 88250118-613 | Screw Compressor Air End |
How to Confirm Compatibility
If you are replacing an existing air end, we recommend checking the following information.
1. Original Part Number
Check the number on the existing air end, service documentation, or previous purchase records.
2. Compressor Nameplate
Provide a clear photograph showing:
Compressor model
Serial number
Motor power
Pressure
Manufacturing information
3. Existing Air End
Photos of the existing component can help compare:
Housing
Shaft
Mounting points
Air connections
Oil connections
Overall configuration
4. Physical Dimensions
Where necessary, compare:
Overall dimensions
Shaft diameter
Mounting hole positions
Connection positions
Why We Recommend Serial Number Verification
The same compressor family can have different configurations depending on production period, pressure rating, drive arrangement, or other equipment specifications.
For this reason, compressor model + serial number + original part number provides a more reliable basis for replacement identification than appearance alone.
Why Replace the Air End Instead of the Complete Compressor?
Air End Replacement vs. Complete Compressor Replacement
When a rotary screw compressor develops an air end problem, replacing the complete compressor is not always necessary.
If the following components remain in good condition:
Electric motor
Electrical system
Controller
Cooling system
Oil system
Pressure vessel
Compressor frame
Other major components
then replacing the air end may be a practical repair option.
Potential Advantages
Lower Equipment Replacement Cost
Replacing one major mechanical assembly can be more economical than purchasing an entirely new compressor.
Extend Existing Equipment Life
A suitable replacement air end can allow a serviceable compressor system to continue operating.
Useful for Compressor Overhauls
Air end replacement can be incorporated into a broader compressor refurbishment project.
Suitable for Maintenance Inventory
Compressor service companies and distributors can also source replacement air ends for future repair projects.
Important
The economic decision depends on the overall condition of the compressor.
If the motor, controller, cooling system, oil system, and other major components are also near the end of their service life, replacing the complete compressor may be more appropriate.
Common Air End Failure Symptoms
How to Identify a Potential Air End Problem
An air end problem can produce several symptoms during compressor operation. However, these symptoms can also originate from other components.
A proper diagnosis should therefore be completed before ordering a replacement.
Reduced Air Delivery
If the compressor produces less compressed air than expected, possible causes include:
Air end internal wear
Rotor wear
Internal leakage
Intake restriction
Air leakage elsewhere in the system
Incorrect pressure settings
Abnormal Noise
Grinding, knocking, whining, or other unusual mechanical noise may indicate:
Bearing wear
Rotor damage
Rotor contact
Coupling problems
Drive system problems
Excessive Vibration
Unusual vibration can be associated with:
Bearing deterioration
Coupling misalignment
Loose mounting
Motor problems
Air end mechanical damage
High Operating Temperature
High compressor temperature should not automatically be attributed to the air end.
Inspect:
Oil level
Oil condition
Oil filter
Oil cooler
Cooling airflow
Thermostatic valve
Ambient temperature
Increased Energy Consumption
If the compressor consumes more power while delivering less compressed air, investigate the entire compression system.
Possible factors include air end efficiency, pressure settings, air leakage, filters, cooling, and lubrication.
Before Replacing the Air End
Air End Troubleshooting Checklist
Before replacing an expensive compressor component, check the following:
| Symptom | Areas to Inspect |
|---|---|
| Low air output | Air end, intake filter, air leakage, pressure settings |
| Abnormal noise | Bearings, rotor, coupling, motor |
| Excessive vibration | Air end, coupling, alignment, mounting |
| High temperature | Oil, cooler, thermostat, cooling airflow |
| High power consumption | Air end efficiency, pressure, cooling, air leakage |
| Oil-related problems | Oil level, oil quality, filter, oil circuit |
This diagnostic approach can help determine whether the air end is actually the source of the problem.
Important
Replacing an air end without identifying the original failure cause can lead to premature failure of the replacement component.
For example, if the original air end failed because of contaminated lubricant or insufficient oil flow, the underlying lubrication problem should be corrected before commissioning the replacement air end.
Installation & Commissioning
Sullair Air End Replacement Considerations
Air end replacement should be performed by qualified compressor technicians using the appropriate service procedures.
Before Installation
Confirm:
Part number
Compressor model
Serial number
Rotation direction
Shaft configuration
Mounting dimensions
Connection positions
Inspect the Drive System
Check:
Motor alignment
Coupling
Shaft condition
Mounting components
Fasteners
Incorrect alignment can introduce additional mechanical loads and shorten component life.
Inspect the Lubrication System
Check:
Compressor lubricant
Oil filter
Oil lines
Oil cooler
Thermostatic valve
Oil flow
If the previous air end failed because of a lubrication problem, simply installing a new air end may not eliminate the root cause.
Initial Commissioning
After installation, monitor:
Rotation direction
Operating pressure
Operating temperature
Oil condition
Vibration
Mechanical noise
Air leakage
Oil leakage
Any abnormal condition should be investigated before continued operation.
Ordering Information
How to Order Sullair Air End 88250118-613
To reduce the risk of ordering an incorrect air end, please provide the following information.
Essential Information
Part Number
88250118-613
Compressor Model
The complete model shown on the compressor nameplate.
Serial Number
The compressor serial number is recommended for accurate application verification.
Required Quantity
Please specify the number of units required.
Destination Country
Required for quotation and shipping arrangements.
Photos That Help Us Confirm the Product
If possible, send:
Compressor nameplate
Existing air end
Air end part number
Shaft end
Mounting area
Air and oil connections
What Happens After You Send the Information?
We can review the information and help with:
Part Number Verification → Compatibility Check → Quotation → Lead Time → Shipping
This process helps reduce the risk of purchasing an incorrectly configured replacement air end.
Frequently Asked Questions
1,What is the Sullair air end 88250118-613?
88250118-613 is a Sullair part number associated with a screw compressor air end. The correct replacement application should be verified against the compressor model and configuration.
2,What does a compressor air end do?
The air end is the main compression assembly in a rotary screw compressor. It uses rotating screw elements to compress incoming air and supply compressed air to the compressor system.
3,What are the signs of a failing air end?
Common warning signs include abnormal mechanical noise, excessive vibration, reduced air delivery, increased operating temperature, and declining compressor efficiency.
These symptoms can also be caused by other components, so diagnosis should be completed before replacing the air end.
4,Can I replace only the air end?
Potentially, yes. If the other major compressor systems are still serviceable, replacing the air end may be a practical alternative to replacing the entire compressor.
The overall condition of the compressor should be evaluated before making the decision.
5,Can the air end be rebuilt?
Some air ends can be rebuilt depending on the condition of the rotors, bearings, housing, and other internal components. Severe damage may make complete replacement more appropriate.
6,How can I confirm whether 88250118-613 fits my compressor?
Send us the compressor model, serial number, nameplate, original air end part number, and clear photos of the existing air end.
We recommend confirming compatibility before ordering.
7,What information do you need for a quotation?
Please provide the part number, compressor model, serial number, quantity, destination country, and available product photos.
8,Do you supply other Sullair compressor parts?
Yes. We supply replacement parts for Sullair compressor maintenance and repair projects, including air filters, oil filters, oil separators, valves, sensors, controllers, and other compressor components.
Request a quote for Sullair air compressor 88250118-613
Need to replace your Sullair air compressor 88250118-613? Clickhere to send your inquiry.
Hot Tags: Sullair Air End 88250118-613 Replacement, China Sullair Air End 88250118-613 Replacement manufacturers, suppliers, Compair Airend EK140NK new, 02250170-125, Sullair air end, ZS1091124, 88250119-827, A11830574
