Both ports are SAE O-Ring Boss (ORB) fittings, size 3/4-16 UNF.
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NorTrac Birotational Hydraulic Pump/Motor, 2.1 GPM, 1/2in. Shaft, CBS6 Quiet Dual-Direction Operation with Check Valves

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- 2-piece cast iron construction for long life
- CBS6 pump features 90% volumetric efficiency and 88% mechanical efficiency
- 1/2in. dia. extended shaft delivers 3,600 rotations per minute
- Excellent cycle times
- High power density
See full description
Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
What's Included
- (1) Birotational pump (1) Front cover (1) Rear cover
Downloads
Features + Benefits
- 2-piece cast iron construction for long life
- CBS6 pump features 90% volumetric efficiency and 88% mechanical efficiency
- 1/2in. dia. extended shaft delivers 3,600 rotations per minute
- Excellent cycle times
- High power density
- 4-bolt flange with 1.78in. dia. pilot
- Inlet and outlet side ports with SAE O-ring 3/4-16UNF
Key Specs
| Attribute | Specification |
|---|---|
item# | 47347 |
Brand | NorTrac |
Manufacturer's Warranty | 1 year limited warranty |
Ship Weight | 3.93 LB |
Max. PSI | 4,000 |
Max. Flow Rate | 2.1 GPM |
| Attribute | Specification |
|---|---|
Shaft Diameter | 0.5 in |
Shaft Type | Keyed |
Pump Type | Gear |
Stage | Single-Stage |
Material | Cast Iron |
Thread Type | Other |
Reviews
Questions & Answers
Questions
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· 5 months ago
What size/type are the inlet/ outlet fittings that are needed needed
1 answer-
NorTracExpert12· 5 months ago
Helpful?
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· 5 months ago
Mounting flange dimensions of the 4 bolt holes?
1 answer-
NorTracExpert12· 5 months ago
The bolt spacing is 2" x 2" on center. The holes have a 5/16" diameter.
Helpful?
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· 2 years ago
What is RPM?
1 answer-
NorTracExpert12· 2 years ago
This pump/motor delivers 3,600 RPM.
Helpful?
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· 5 years ago
Is this a ball bearing supported shaft pump? Is it okay to turn this pump with pulleys and a belt? Thanks
1 answer-
NorTracExpert7· 5 years ago
The pump does not have ball bearing support. This can be belt driven as long as a pillow block for support is installed.
Helpful?
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· 5 years ago
can this be used as a hydraulic motor to power a chainsaw
1 answer-
NorTracExpert11· 5 years ago
The hydraulic motor is not designed to be used to power a chainsaw. It is not able to withstand a side load on the shaft.
Helpful?
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· 9 years ago
Can this pump/motor rotate in either direction while in service without any modification or adjustments?
I am interested in an application where oil is pumped in one direction and then pumped in the opposite direction by reversing the shaft rotation with a reversible electric motor.
1 answer-
NorTracExpert30· 9 years ago
This NorTrac pump/motor can be rotate in either direction while in service without any modifications.
Helpful?
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· 10 years ago
what torque at 300 rpm?
1 answer-
NorTracExpert11· 10 years ago
The formula to determine the torque output on this pump/motor is: displacement (in cubic-inches/shaft revolutions) x pressure(psi)/ divided by 6.28. This pump/motor's displacement is .132 cubic-inches per revolution. A pressure gauge will need to be installed on the hydraulic line to measure the pressure in PSI. Take the measured pressure in PSI x .132 then divide by 6.28 = Torque output in units of inch-pounds or in-lbs.
For example, continuous torque for this pump/motor at 3000 psi torque would be:
T (torque) = .132 (displacement) x 3000 (psi)/ 6.28= 63.06 inch-lbs of Torque with a max continuous pressure rating of 3000 PSI.For example, max intermittent torque output at a max pressure of 4000 PSI would calculate like this:
T= .132 x 4000/ 6.28 =84 inch-lbs of Torque and then intermittent would be about 10% duty cycle so 6 minutes on and 54 minutes off.Helpful?
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Warranty
Manufacturer's Warranty
1 year limited warranty
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Replacement Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Specifications
4,000
10,000
3,000
3,000
2.1 GPM
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13 GPM
22 GPM
0.5 in
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0.5 in
0.62 in
Keyed
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Keyed
Keyed
Gear
Air
Gear
Gear
Single-Stage
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Two-Stage
Two-Stage
Cast Iron
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Multiple
Cast Iron
Other
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lb
lb
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6.6 x 5.4 x 3.4 in
8.1 x 5.3 x 4.3 in



