johnDeere4045T
John Deere 4045T

Logan Front Mount PTO’s for John Deere 4045T Diesel Engines and Generator Sets

Features:

  • Air or Fluid Actuated from 80 to 100 psi.
  • 25% more torque (520 lb. ft.) and higher engagement speeds (1800 RPM).
  • The low profile, compact, Logan PTO design is suitable for workboats, fishing boats and pleasure craft.
  • The Logan PTO aids in the reduction of emissions, energy, fuel costs and wear and tear on auxiliary attachments.
  • Field retrofits with existing John Deere / Pitts Style electromagnetic PTO clutches.
  • Also available for 6068, 6081, 6090 and 6135 models (75-600 HP / 56-448 KW).
99kWe MG68T148: Engine shown with cover plate removed for clarity
Clutch shown with cover plate removed.
404 lb. ft. of torque @ 80 psi. / 520 lb. ft. @ 100 psi. Max engage- ment speed is 1800 RPM. Clutch shown with cover plate removed.

Advantages:

  • During maneuvering–which requires reduction of main engine speed, the Logan PTO is used as a separate power source for bow and stern thrusters.
  • The PTO directly connects to a pump drive, which powers winches, reels, hoists, and deck pressure washers.
  • The PTO can be coupled to an alternator to supply electric power to other power consumers on the vessel.

 

Air/Fluid Actuated PTO SPF 400 Specifications

PTO SPF 400 Specifications

Dimensions

A 8.99 in
228.3 mm
F 1.63 in
41.4 mm
B 6.65 in
168.9 mm
G 0.28 in
7.1 mm
C 5.81 in
147.6 mm
H 3/8-16
D 7.59 in
192.8 mm
J 6.25 in
158.8 mm
E 5.00 in
127.0 mm
K 7.95 in
201.9 mm

PTO SPF 400 Specifications

  U.S S.I.
*Rated Torque (Maximum) 400 Ft/Lbs 524 Nm
Maximum HP 180 HP 134 KW
*Maximum RPM 2400 RPM 2400 RPM
**Maximum Engagement RPM 1800 RPM 1800 RPM
Rotation Bi-rotation Bi-rotation
Maximum Actuation Pressure 100 psi 6.9 Bar
Displacement (Maximum) 4.5 in3
74 cm3
Minimum Flow Rate Required 1.5 GPM 5.6 Liters/min
Operating Media at Clutch (Oil or Air) Standard Standard
Maximum Back Pressure to Tank 7 psi 0.5 Bar
Maximum Fluid Temperature
180º F 82º C

Material - Output Hub

Alloy Steel Alloy Steel

Material - Housing

Aluminum Aluminum

External Finish - Output Hub

Alloy Steel Alloy Steel
External Finish - Housing Aluminum Aluminum
Weight (Approximate) 29 Lbs 13 Kg


* Consult Logan Clutch for applications that require lower actuation pressure or increased torque and rpm requirements or greater installation angle.

** Soft start feature may be required for engagement above machine idle rpm.

* Input drive flange bolt pattern are dimensioned to correlate with Lovejoy or Centa torsional coupling size 50.

PTO SPF 400 Clutch

Note: The torque capacity of the clutch is directly    proportional to the operating pressure. Maintaining the lowest pressure possible to transfer the desired torque will enable the clutch to run cooler and extend the life span of the internal bearings.

The output end of the clutch (female spline/bore) is not capable of supporting any side load. Use overhung load adapters.Drive shaft alignment must be within 3 degrees. Maximum installation angle should be 7°.
 

PTO SPF 400 Series Static Torque Ratings 

PSI (Ratings in ft. lbs.)

Model
SPF 400
80 90 100
404 462 520

 

PTO SPF 400 Series Static Torque Ratings 

BAR (Ratings in Nm)

Model
SPF 400
5.5 6.2 6.9
548 626 705

 

Horsepower Required to Drive Hydraulic Pump

HP*
25 50 100
Pump Size(GPM) 20 40 80

*HP=PSI x GPM/1371.2    (1714x80% efficiency=1371.2)
*1 HP is required for each 1 GPM@1500 PSI

PTO SPF 400 Series Pump Shaft Options

Output Description
SAE 'C' Spline 14t 12/24 DP
SAE 'B' Straight Shaft 1.250 Dia. with 5/16 Key
Shaft 1.250 Dia. with 5/16 Key