5 HP 2 Stage 2-Cylinder 19 SCFM Air Compressor Pump CS1105T
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The Compressor Source CS1105T is a 5 horsepower replacement two-stage air compressor pump. It has two cast iron cylinders and delivers 18.71 CFM at 860 RPM, with a maximum of 19 CFM and a maximum RPM of 900. The recommended operating range is 750-900 RPM, and the minimum RPM is 750. The maximum recommended working pressure is 175 PSI.
This pump is most commonly used on compressor tanks of 80 gallons or larger. It can be used with 220-volt, 5 horsepower electric motors or larger. To verify that your motor is large enough, it should be at least 5 HP and draw 20 amps or higher at 220 volts.
The pump has a cast iron cylinder and crankcase and is equipped with a sight glass for viewing the oil level. It comes complete as shown in the photos, including an intake filter and the flywheel. See the specifications below for more details.
Features:
• Cast Iron Cylinder and Crankcase
• Sight Glass for Viewing the Oil Level
• One Intake Filter Included
• Flywheel Included
Specifications:
• Model Number: CS1105T
• Two Cylinder
• Two Stage
• 5 HP
• Maximum Recommended Working Pressure: 175 PSI
• Recommended RPM: 750-900
• SCFM: 19 Max
• Bolt Pattern: 7.76" (Front to Back) x 9.02" (Side to Side)
Performance
| Horsepower | 5 – 7.5 HP |
|---|---|
| Stages | Two Stage |
| Cylinders | 2 |
| Bore × stroke Cylinder bore diameter × piston stroke length. Two-stage pumps list the low- and high-pressure bores. | 4.13" & 2.16" x 3.5" |
| Air delivery Air delivered at the stated discharge pressure. | 18.0 CFM @ 790 RPM (24 ACFM at 910 RPM) |
| Max pressure | 175 PSI |
| Pump speed Recommended operating speed range of the pump. | 790 – 910 RPM |
| Duty cycle Share of each run cycle the pump can run before it needs to rest and cool. | 70% (max 45 min run, then 20 min off) |
Drive & Belt
| Flywheel O.D. Outside diameter of the pump flywheel. Paired with the motor pulley O.D. to set pump speed. | 16.9″ |
|---|---|
| Flywheel rotation Direction the flywheel must turn, viewed facing the flywheel. Wire the motor to match. | Counterclockwise |
| Belt section | B-Section |
| Grooves | 2 |
Mounting & Dimensions
| Overall dimensions (L × W × H) | 19.6″ × 16.9″ × 23″ |
|---|---|
| Weight | 180.3 lb |
| Mounting bolt pattern Center-to-center spacing of the mounting-foot bolt holes. | 7.75" x 9" |
Connections
| Air outlet | 3/4" NPT↳ Compatible hose: 3/4" x 24" Stainless Steel Compressed Air Line Metal Flex Hose Compressor Tube — $64.95 |
|---|---|
| Intake thread | 1" NPT |
Included & Maintenance
| Head unloaders | No |
|---|---|
| Flywheel included | Yes |
| Air filters included | One↳ Replacement element: A424 Air Compressor Intake Filter Paper Element — $4.95 |
| Sight glass | Yes |
| Lubrication | Splash |
| Oil included | No |
| Recommended oil | 30W Non-Detergent Compressor Oil↳ We stock: MAG1 Air Compressor Oil ISO-100 SAE-30W Non-Detergent 1 Gallon Jug — $24.95 |
| Oil fill level | 2.5 qt (fill to ½ on the sight glass) |
Sizing Guidance
| Recommended tank size | 80 Gallons |
|---|---|
| Recommended motor | 5 – 7.5 HP |
Identification
| Material | Cast Iron |
|---|---|
| Country of origin | China |
| Model / part number | CS1105T |
| Warranty | 1-Year |
Commonly Replaces / Fits
| Industrial Gold CA1 |
| Saylor Beal 705 |
| CI5 |

