Logan SAE PTO 600 Series –
Hydraulic & Pneumatic PTO ClutchSpecifications

pto 600 image

Mounting dimensions conforming to SAE J744

SAE PTO 600 dimensional data*: mounting dimensions A through P conforming to SAE J744, in inches and millimeters
Dimension A B C D1 D2 D3 E1 E2 E3 F G H J K L M N P
Dimensions in inches 10.62 8.44 8.5 2.5 0.53 5.002 2.18 0.5 4.998 4.511 0.54 0.69 7.15 4.508 1/2-13UNC 7.125 5/8-11UNC 0.55
Dimensions in millimeters 269.8 214.4 215.9 63.5 13.5 127.1 55.4 12.7 126.9 114.6 13.7 17.5 114.5 1/2-13UNC 181 5/8-11UNC 14

* Standard configuration. Modified standards available.

SAE PTO 600 mounting dimensions (text version)

SAE PTO 600 dimensional data: all mounting dimensions conform to SAE J744 and are listed below for dimensions A through P in inches and millimeters. These are standard configuration dimensions; modified standards are available.

  • Dimension A: 10.62 in (269.8 mm).
  • Dimension B: 8.44 in (214.4 mm).
  • Dimension C: 8.5 in (215.9 mm).
  • Dimension D1: 2.5 in (63.5 mm).
  • Dimension D2: 0.53 in (13.5 mm).
  • Dimension D3: 5.002 in (127.1 mm).
  • Dimension E1: 2.18 in (55.4 mm).
  • Dimension E2: 0.5 in (12.7 mm).
  • Dimension E3: 4.998 in (126.9 mm).
  • Dimension F: 4.511 in (114.6 mm).
  • Dimension G: 0.54 in (13.7 mm).
  • Dimension H: 0.69 in (17.5 mm).
  • Dimension J: 7.15 in.
  • Dimension K: 4.508 in (114.5 mm).
  • Dimension L: 1/2-13UNC thread.
  • Dimension M: 7.125 in (181 mm).
  • Dimension N: 5/8-11UNC thread.
  • Dimension P: 0.55 in (14 mm).

PTO 600 Actual Static Torque****

PTO 600 Actual Static Torque****
Units 6100 Series 6200 Series 6300 Series
Standard Units Lbs.-Ft. 912 985 985
PSI (MAX.) 120 200 320
Metric Units Bar (MAX.) 8.3 13.8 22.1
Nm 1237 1336 1336

**** Torque ratings based on using ATF fluid as a lubricant. Refer to Logan IOM Manual for approved lubricants.

PTO 600 actual static torque by series (text version)

PTO 600 actual static torque and maximum pressure for the 6100, 6200 and 6300 Series, listed in standard and metric units. Torque ratings are based on using ATF fluid as a lubricant; refer to the Logan IOM Manual for approved lubricants.

  • 6100 Series: actual static torque 912 lb-ft (1237 Nm); maximum pressure 120 PSI (8.3 bar).
  • 6200 Series: actual static torque 985 lb-ft (1336 Nm); maximum pressure 200 PSI (13.8 bar).
  • 6300 Series: actual static torque 985 lb-ft (1336 Nm); maximum pressure 320 PSI (22.1 bar).

PTO 600 Series input shaft options: SAE C and SAE C-C, splined or keyed
PTO 600 Series Input Shaft Option***
SAE ‘C’ Spline 14T 12/24 DP
SAE ‘C-C’ Spline 17T 12/24 DP
SAE ‘C’ Ø 1.250 x 5/16 Sq. Key
SAE ‘C-C’ Ø 1.500 x 3/8 Sq. Key

*** Contact Logan Clutch for alternative pump shaft options. The output end of the clutch (female spline/bore) is not capable of supporting any side load. Use overhung load adapters.

PTO 600 Series input shaft options (text version)

The PTO 600 Series is available with four input shaft options: two splined and two keyed, in SAE C and SAE C-C sizes. Contact Logan Clutch for alternative pump shaft options. The output end of the clutch (female spline/bore) is not capable of supporting any side load. Use overhung load adapters.

  • SAE ‘C’ Spline 14T 12/24 DP: SAE C spline shaft, 14 teeth, 12/24 diametral pitch.
  • SAE ‘C-C’ Spline 17T 12/24 DP: SAE C-C spline shaft, 17 teeth, 12/24 diametral pitch.
  • SAE ‘C’ Ø 1.250 x 5/16 Sq. Key: SAE C keyed shaft, 1.250 in (31.75 mm) diameter with a 5/16 in (7.94 mm) square key.
  • SAE ‘C-C’ Ø 1.500 x 3/8 Sq. Key: SAE C-C keyed shaft, 1.500 in (38.10 mm) diameter with a 3/8 in (9.53 mm) square key.

PTO 600 Series output (pump) shaft options: SAE C, SAE C-C and SAE D, splined or keyed
PTO 600 Series Output (Pump) Shaft Option***
SAE ‘C’ Spline 14T 12/24 DP
SAE ‘C-C’ Spline 17T 12/24 DP
SAE ‘C’ Ø 1.250 x 5/16 Sq. Key
SAE ‘C-C’ Ø 1.500 x 3/8 Sq. Key
Spline 21T 16/32 DP
Spline 23T 16/32 DP
SAE ‘D’ 13T 8/16 DP

*** Contact Logan Clutch for alternative pump shaft options. The output end of the clutch (female spline/bore) is not capable of supporting any side load. Use overhung load adapters.

PTO 600 Series output (pump) shaft options (text version)

The PTO 600 Series is available with seven output (pump) shaft options: five splined and two keyed, including SAE C, SAE C-C and SAE D sizes. Contact Logan Clutch for alternative pump shaft options. The output end of the clutch (female spline/bore) is not capable of supporting any side load. Use overhung load adapters.

  • SAE ‘C’ Spline 14T 12/24 DP: SAE C spline shaft, 14 teeth, 12/24 diametral pitch.
  • SAE ‘C-C’ Spline 17T 12/24 DP: SAE C-C spline shaft, 17 teeth, 12/24 diametral pitch.
  • SAE ‘C’ Ø 1.250 x 5/16 Sq. Key: SAE C keyed shaft, 1.250 in (31.75 mm) diameter with a 5/16 in (7.94 mm) square key.
  • SAE ‘C-C’ Ø 1.500 x 3/8 Sq. Key: SAE C-C keyed shaft, 1.500 in (38.10 mm) diameter with a 3/8 in (9.53 mm) square key.
  • Spline 21T 16/32 DP: spline shaft, 21 teeth, 16/32 diametral pitch.
  • Spline 23T 16/32 DP: spline shaft, 23 teeth, 16/32 diametral pitch.
  • SAE ‘D’ 13T 8/16 DP: SAE D spline shaft, 13 teeth, 8/16 diametral pitch.

PTO 600 Specifications

PTO 600 Specifications (U.S. and S.I. units)
Specification U.S. S.I.
* Rated Static Torque (Maximum) 600 ft.lbs. 813 Nm
Maximum HP/kW 342 HP 255 kW
*Maximum RPM Under Load 3000 RPM 3000 RPM
*Recommended Engagement Speed Idle Idle
Rotation Bi-rotation Bi-rotation
** Maximum Actuation Pressure 120, 200 or 320 PSI 8.3, 13.8 or 22.1bar
Min/Max Case Pressure at Input w/Optional High Pressure Seals 7/50 PSI 0.5/3.4 bar
Min. Flow Rate Required (Actuation) 1.5 GPM 5.7 liters/min.
Operating Media at Clutch (Oil or Air) Standard Standard
Max. Back Pressure to Tank (Actuation) 7 PSI 0.5 bar
Maximum Actuation Fluid Temperature 180° F 82° C
Displacement: 6100 Series (New/Worn) 3.3/5.1 in3 54/83.5 cm3
6200 Series (New/Worn) 2.4/3.6 in3 39.3/59 cm3
6300 Series (New/Worn) 1.5/2.3 in3 24.5/37.7 cm3
Weight (Approx.) 52 lbs. 24 kg

* Standard configuration. Modified standards available.

** Logan SAE PTO 600 Series clutches are available in three (3) different actuation pressures. Refer to part number to determine model configuration.

PTO 600 specifications (text version)

The PTO 600 weighs approximately 52 lbs. (24 kg), is bi-rotational, and is rated to a maximum static torque of 600 ft.lbs. (813 Nm). Rated static torque, maximum RPM under load and recommended engagement speed are for the standard configuration; modified standards are available. Logan SAE PTO 600 Series clutches are available in three (3) different actuation pressures. Refer to part number to determine model configuration. Each line below gives the U.S. value with the S.I. value in parentheses.

  • Rated Static Torque (Maximum): 600 ft.lbs. (813 Nm).
  • Maximum HP/kW: 342 HP (255 kW).
  • Maximum RPM Under Load: 3000 RPM.
  • Recommended Engagement Speed: Idle.
  • Rotation: Bi-rotation.
  • Maximum Actuation Pressure: 120, 200 or 320 PSI (8.3, 13.8 or 22.1 bar).
  • Min/Max Case Pressure at Input w/Optional High Pressure Seals: 7/50 PSI (0.5/3.4 bar).
  • Min. Flow Rate Required (Actuation): 1.5 GPM (5.7 liters/min.).
  • Operating Media at Clutch (Oil or Air): Standard.
  • Max. Back Pressure to Tank (Actuation): 7 PSI (0.5 bar).
  • Maximum Actuation Fluid Temperature: 180° F (82° C).
  • Displacement, 6100 Series: 3.3 in3 (54 cm3) new, 5.1 in3 (83.5 cm3) worn.
  • Displacement, 6200 Series: 2.4 in3 (39.3 cm3) new, 3.6 in3 (59 cm3) worn.
  • Displacement, 6300 Series: 1.5 in3 (24.5 cm3) new, 2.3 in3 (37.7 cm3) worn.
  • Weight (Approx.): 52 lbs. (24 kg).

Disclaimer:

All Data and Dimensions are for reference only. Please contact Logan Clutch for detailed information.

Logan PTO Clutch Selection Procedure

Simplified Selection Procedure for Pump on Pad Configurations:

Determine pump face and shaft requirements. If mounting pad is identical, determine method of actuation, and select clutch from page 13 and 14 specifications.

Clutch Selection Procedures for Applications with Drive Shaft Input or Output, and Pumps not Conforming to SAE J744 (i.e. Fire Fighting Pumps)

I

Calculate the driven torque requirements for the application using one of the formula.
Torque (Lb./FT.) = (HP x 5250) / RPM
OR
Tc (Nm.) = (kW x 9550)/ RPM

II

Decide which series best fits your drive.

III

Using the appropriate series torque pressure to determine the model size.

IV

Determine if the Series and models will:
1) Accommodate the shaft key, or spline
2) Operate at the required speed
3) Fit within the available space

V

Determine the Support/Mounting

VI

Please complete the Application Fact Sheet details; scan and e-mail to: sales@loganclutch.com

HP = Horsepower

RPM = Clutch or Brake shaft speed

WR2 = Total inertia to be stopped (Ib.ft.2)

T = Required Torque (Lb./ Ft., Nm, Lb./in)

Tc = Clutch Torque (Lb./ Ft., Nm, Lb./in)

Tb = Brake Torque (Lb./ Ft., Nm, Lb./in)

t = Time to stop (seconds)

Torque & Horsepower Formulas

HP = (T(Lb./Ft.) x RPM) / 5250

Torque (Lb./Ft.) = (HP x 5250) / RPM

HP = (T(Lb./In.) x RPM) / 63025

Torque (Lb./In.) = (HP x 63025) / RPM

kW = (T(Nm.) x RPM) / 9550

Torque (Nm.) = (kW x 9550) / RPM

Torque Conversion CalculatorsMultiplier
Newton meters (Nm.) to Pound inches (lb.in.)8.851
Pound inches (lb. in.) to Newton meters (Nm.)0.113
Newton meters (Nm.) to Pounds feet (lb. ft.)0.738
Pounds feet (lb.ft.) to Newton meters (Nm)1.356
Horsepower Conversion CalculatorsMultiplier
Horsepower (HP) to kW (Kilowatt)0.7457
Kilowatt (kW) to Horsepower (HP)1.341
Pressure Conversion CalculatorsMultiplier
Bar to pounds per square inch (psi)14.5
Pounds per square inch (psi) to Bar0.068
Measurement Conversion TableMultiplier
Millimeters (mm) to Inches (in)0.03937
Inches (in) to Millimeters (mm)25.4
Weight Conversion TableMultiplier
Pounds (Lbs.) to Kilograms (Kg.)0.0453
Kilograms (Kg.) to Pounds (Lbs.)2.205
Volume Conversion TableMultiplier
Gallons (Gal.) to Liters (Ltr.)3.785
Liters (Ltr.) to Gallons (Gal.)0.2642

Logan SAE PTO Part Numbering System

Click on number to view table -

S C C - 6 1 0 0 D - 0 1
1
2
3
4
5
6
6
7
8
8
1

Style
S SAE PTO
PTO style options (text version)

This table lists the available PTO style codes; one style is shown.

  • Style S: style code S designates an SAE PTO.
2

Input Flange Size
B
C
D
E
F
PTO input flange size options (text version)

This table lists the available PTO input flange sizes; five sizes are shown.

  • Input flange size: available input flange sizes are B, C, D, E and F.
3

Output Flange Size
A
B
C
D
E
F
PTO output flange size options (text version)

This table lists the available PTO output flange sizes; six sizes are shown.

  • Output flange size: available output flange sizes are A, B, C, D, E and F.
4

Identifier Rated Torque (ft.lbs.) Rated Torque (Nm)
2 200 271
3 300 407
4 400 542
6 600 814
10 1000 1356
12 1200 1627
15 1500 2034
22 2200 3000
Rated torque by serial number identifier (text version)

The identifier in a serial number indicates the unit’s rated torque. Eight identifiers are listed, from 2 (200 lb-ft) to 22 (2200 lb-ft).

  • Identifier 2: a 2 in the serial number indicates a rated torque of 200 lb-ft (271 Nm).
  • Identifier 3: a 3 in the serial number indicates a rated torque of 300 lb-ft (407 Nm).
  • Identifier 4: a 4 in the serial number indicates a rated torque of 400 lb-ft (542 Nm).
  • Identifier 6: a 6 in the serial number indicates a rated torque of 600 lb-ft (814 Nm).
  • Identifier 10: a 10 in the serial number indicates a rated torque of 1000 lb-ft (1356 Nm).
  • Identifier 12: a 12 in the serial number indicates a rated torque of 1200 lb-ft (1627 Nm).
  • Identifier 15: a 15 in the serial number indicates a rated torque of 1500 lb-ft (2034 Nm).
  • Identifier 22: a 22 in the serial number indicates a rated torque of 2200 lb-ft (3000 Nm).
5

Serial number identifiers and the actuation pressure each one indicates, in pounds per square inch (psi) and bar.
Identifier Actuation Pressure (psi) Actuation Pressure (bar)
1 120 8.3
2 200 13.8
3 320 22.1
Actuation pressure by serial number identifier (text version)

The identifier in a serial number indicates the unit’s actuation pressure. Three identifiers are listed, from 1 (120 psi) to 3 (320 psi).

  • Identifier 1: a 1 in the serial number indicates an actuation pressure of 120 psi (8.3 bar).
  • Identifier 2: a 2 in the serial number indicates an actuation pressure of 200 psi (13.8 bar).
  • Identifier 3: a 3 in the serial number indicates an actuation pressure of 320 psi (22.1 bar).
6

Standard clutch input options, male input size, for clutch sizes 200 through 2200, listed by row number 00 through 09.
Clutch Size • Standard – Input Size Male
200 300 400 600 1000 1200 1500 2200
00 Dry ‘B’ Spline Dry ‘C’ Spline Dry ‘C’ Spline Dry ‘D’ Spline Dry ‘F’ Spline Dry ‘F’ Spline Dry ‘F’ Spline
01 Wet ‘B’ Spline Wet ‘B’ Spline Wet ‘C’ Spline Wet ‘C’ Spline Wet ‘D’ Spline Wet ‘F’ Spline Wet ‘F’ Spline Wet ‘F’ Spline
02 Dry ‘B-B’ Spline Dry ‘C-C’ Spline Dry ‘C-C’ Spline Dry ‘D’ Shaft Dry ‘E’ Shaft
03 Wet ‘B-B’ Spline Wet ‘B-B’ Spline Wet ‘C-C’ Spline Wet ‘C-C’ Spline Wet ‘D’ Shaft Wet ‘E’ Shaft
04 Dry ‘B’ Shaft Dry ‘C’ Shaft Dry ‘D&E’ Spline Dry 2 7/16 w/ 5/8 Dry 2 7/16
05 Wet ‘B’ Shaft Wet ‘C’ Shaft Wet ‘D&E’ Spline
06 Dry ‘B-B’ Shaft Dry ‘C-C’ Shaft
07 Wet ‘B-B’ Shaft Wet ‘C-C’ Shaft
08 Dry ‘C’ Spline
09 Wet ‘C’ Spline
Standard clutch input options (male input size) by clutch size (text version)

Male input options for standard clutches are listed for eight clutch sizes, 200 through 2200, with each option on a numbered row from 00 to 09.

  • Clutch size 200: 01: wet ‘B’ spline; 03: wet ‘B-B’ spline.
  • Clutch size 300: 00: dry ‘B’ spline; 01: wet ‘B’ spline; 02: dry ‘B-B’ spline; 03: wet ‘B-B’ spline; 04: dry ‘B’ shaft; 05: wet ‘B’ shaft; 06: dry ‘B-B’ shaft; 07: wet ‘B-B’ shaft; 08: dry ‘C’ spline; 09: wet ‘C’ spline.
  • Clutch size 400: 00: dry ‘C’ spline; 01: wet ‘C’ spline; 02: dry ‘C-C’ spline; 03: wet ‘C-C’ spline.
  • Clutch size 600: 00: dry ‘C’ spline; 01: wet ‘C’ spline; 02: dry ‘C-C’ spline; 03: wet ‘C-C’ spline; 04: dry ‘C’ shaft; 05: wet ‘C’ shaft; 06: dry ‘C-C’ shaft; 07: wet ‘C-C’ shaft.
  • Clutch size 1000: 00: dry ‘D’ spline; 01: wet ‘D’ spline; 02: dry ‘D’ shaft; 03: wet ‘D’ shaft.
  • Clutch size 1200: 00: dry ‘F’ spline; 01: wet ‘F’ spline; 02: dry ‘E’ shaft; 03: wet ‘E’ shaft; 04: dry ‘D&E’ spline; 05: wet ‘D&E’ spline.
  • Clutch size 1500: 00: dry ‘F’ spline; 01: wet ‘F’ spline; 04: dry 2 7/16 w/ 5/8.
  • Clutch size 2200: 00: dry ‘F’ spline; 01: wet ‘F’ spline; 04: dry 2 7/16.
7

Dual actuation at 120 and 320 psi, available for rated torque models in the 1000, 1200 and 1500 series.
Dual Actuation - 120 and 320 PSI
Designation applies to rated torque models 1000, 1200 and 1500 series
Dual actuation designation (text version)

The dual actuation designation covers two actuation pressures and is limited to specific rated torque models.

  • Dual actuation: actuation pressures of 120 psi (8.3 bar) and 320 psi (22.1 bar); this designation applies to rated torque models in the 1000, 1200 and 1500 series.
8

Standard clutch output options, female output size, for clutch sizes 200 through 2200, listed by serial number identifier 01 through 10.
Clutch Size • Standard – Output Size Female
Identifier 200 300 400 600 1000 1200 1500 2200
01 ‘B’ Spline ‘B’ Spline ‘C’ Spline ‘C’ Spline ‘D’ & ‘E’ Spline ‘F’ Spline ‘F’ Spline ‘F’ Spline
02 ‘B-B’ Spline ‘B-B’ Spline ‘C-C’ Spline ‘C-C’ Spline ‘D’ & ‘E’ Bore/Key ‘D’ & ‘E’ Spline ‘D’ & ‘E’ Spline ‘D’ Spline
03 ‘B-B’ Bore/Key ‘B’ Bore/Key ‘C’ Bore/Key ‘C’ Bore/Key Spline 27T 16/32 DP Spline 33T 16/32 DP ‘D’ & ‘E’ Bore/Key ‘D’ Bore 1.75 w/ 7/16 Key
04 ‘B’ Bore/Key ‘B-B’ Bore/Key Spline 21T 16/32 DP ‘C-C’ Bore/Key Spline 33T 16/32 DP Spline 23T 16/32 DP Bore 2-7/16 w/ 5/8 Key Bore 2-7/16 w/ 5/8 Key
05 ‘C’ Spline ‘D’ & ‘E’ Spline Spline 16T 10/20 DP Spline 27T 16/32 DP Spline 27T 16/32 DP Spline 27T 16/32 DP
06 Spline 21T 16/32 DP Spline 16T 8/16 DP Spline 33T 16/32 DP Spline 33T 16/32 DP
07 Spline 23T 16/32 DP DIN 5480
08 ‘B’ Spline 50 mm bore 14 mm key
09 Spline 27T 16/32 DP ‘F’ Spline
10 ‘B-B’ Spline
Standard clutch output options (female output size) by clutch size and serial number identifier (text version)

The two-digit identifier (01 to 10) in a standard clutch’s serial number indicates its female output option. What each identifier means depends on the clutch size, from 200 through 2200.

  • Clutch size 200: identifier 01 indicates ‘B’ spline; identifier 02 indicates ‘B-B’ spline; identifier 03 indicates ‘B-B’ bore/key; identifier 04 indicates ‘B’ bore/key.
  • Clutch size 300: identifier 01 indicates ‘B’ spline; identifier 02 indicates ‘B-B’ spline; identifier 03 indicates ‘B’ bore/key; identifier 04 indicates ‘B-B’ bore/key; identifier 05 indicates ‘C’ spline.
  • Clutch size 400: identifier 01 indicates ‘C’ spline; identifier 02 indicates ‘C-C’ spline; identifier 03 indicates ‘C’ bore/key; identifier 04 indicates spline 21T 16/32 DP.
  • Clutch size 600: identifier 01 indicates ‘C’ spline; identifier 02 indicates ‘C-C’ spline; identifier 03 indicates ‘C’ bore/key; identifier 04 indicates ‘C-C’ bore/key; identifier 05 indicates ‘D’ & ‘E’ spline; identifier 06 indicates spline 21T 16/32 DP; identifier 07 indicates spline 23T 16/32 DP; identifier 08 indicates ‘B’ spline; identifier 09 indicates spline 27T 16/32 DP; identifier 10 indicates ‘B-B’ spline.
  • Clutch size 1000: identifier 01 indicates ‘D’ & ‘E’ spline; identifier 02 indicates ‘D’ & ‘E’ bore/key; identifier 03 indicates spline 27T 16/32 DP; identifier 04 indicates spline 33T 16/32 DP; identifier 05 indicates spline 16T 10/20 DP; identifier 06 indicates spline 16T 8/16 DP; identifier 07 indicates DIN 5480; identifier 08 indicates 50 mm bore 14 mm key; identifier 09 indicates ‘F’ spline.
  • Clutch size 1200: identifier 01 indicates ‘F’ spline; identifier 02 indicates ‘D’ & ‘E’ spline; identifier 03 indicates spline 33T 16/32 DP; identifier 04 indicates spline 23T 16/32 DP; identifier 05 indicates spline 27T 16/32 DP.
  • Clutch size 1500: identifier 01 indicates ‘F’ spline; identifier 02 indicates ‘D’ & ‘E’ spline; identifier 03 indicates ‘D’ & ‘E’ bore/key; identifier 04 indicates bore 2-7/16 w/ 5/8 key; identifier 05 indicates spline 27T 16/32 DP; identifier 06 indicates spline 33T 16/32 DP.
  • Clutch size 2200: identifier 01 indicates ‘F’ spline; identifier 02 indicates ‘D’ spline; identifier 03 indicates ‘D’ bore 1.75 w/ 7/16 key; identifier 04 indicates bore 2-7/16 w/ 5/8 key; identifier 05 indicates spline 27T 16/32 DP; identifier 06 indicates spline 33T 16/32 DP.

How to match your pump with a Logan SAE PTO Clutch

Using the diagrams and table below, determine what hydraulic pump you have or require.

I

Count the number of mounting holes and measure the distance between the holes.

II

Count the No. of teeth (if there is a spline) or (if there is a key), measure the key width.

III

Measure the diameter of the spline or straight shaft.

IV

Measure the length of the shaft from the mounting face to the end of the shaft.

V

Measure the length of the full spline or key end of shaft towards the pump.

VI

Measure the pilot diameter of the pump.

VII

Utilize the chart and diagrams below to determine what pump you have or require.

VIII

Match the Male / Input of the pump with a Logan SAE PTO Clutch.

Mounting Flange 2-Bolt Diagram

Mounting Flange 2-Bolt

Mounting Fland 4-Bolt Diagram

Mounting Fland 4-Bolt

Splined Shaft Diagram

Splined Shaft

Keyed Shaft Diagram

Keyed Shaft

SAE J744 pump mount flange and shaft sizes A-A through F: pilot diameter, bolt circle and hole diameter for 2-bolt and 4-bolt pumps, plus spline and keyed shaft dimensions.
Pump Mount Flange & Shaft Size SAE J744 2-Bolt Pump 4-Bolt Pump Shaft Dimensions
‘E’ Pilot Dia ‘F’ B.C. ‘H’ Hole Diam. ‘E’ Pilot Dia ‘F’ B.C. ‘H’ Hole Diam. Spline Spec. Spline Shaft Shaft & Key Diam. Shaft & Key Shaft Length
A-A 2.000 3.250 0.406 None 9T 20/40 1.06 0.500 x .125 1.06
A 3.250 4.187 0.438 9T 16/32 1.25 0.625 x .156 1.25
B 4.000 5.750 0.562 4.000 5.000 0.562 13T 16/32 1.62 0.875 x .250 1.62
B-B 15T 16/32 1.81 1.000 x .250 1.81
C 5.000 7.125 0.688 5.000 6.375 0.562 14T 12/24 2.19 1.250 x .312 2.19
C-C 17T 12/24 2.44 1.500 x .375 2.44
D 6.000 9.000 0.812 6.000 9.000 0.812 13T 8/16 2.94 1.750 x .437 2.94
E 6.500 12.500 1.062 6.500 12.500 0.812 13T 8/16 2.94 1.750 x .437 2.94
F 7.000 13.781 1.062 7.000 13.781 1.062 15T 8/16 3.44 None None
SAE J744 pump mount flange and shaft dimensions by size (text version)

Pump mount flange and shaft dimensions are listed for nine SAE J744 sizes, A-A through F, covering 2-bolt pumps, 4-bolt pumps and shaft dimensions.

  • Size A-A: 2-bolt pump ‘E’ pilot dia 2.000, ‘F’ B.C. 3.250, ‘H’ hole diam. 0.406; 4-bolt pump: none; spline spec. 9T 20/40, spline shaft 1.06, shaft & key diam. 0.500 x .125, shaft & key shaft length 1.06.
  • Size A: 2-bolt pump ‘E’ pilot dia 3.250, ‘F’ B.C. 4.187, ‘H’ hole diam. 0.438; 4-bolt pump: none; spline spec. 9T 16/32, spline shaft 1.25, shaft & key diam. 0.625 x .156, shaft & key shaft length 1.25.
  • Size B: 2-bolt pump ‘E’ pilot dia 4.000, ‘F’ B.C. 5.750, ‘H’ hole diam. 0.562; 4-bolt pump ‘E’ pilot dia 4.000, ‘F’ B.C. 5.000, ‘H’ hole diam. 0.562; spline spec. 13T 16/32, spline shaft 1.62, shaft & key diam. 0.875 x .250, shaft & key shaft length 1.62.
  • Size B-B: 2-bolt pump ‘E’ pilot dia 4.000, ‘F’ B.C. 5.750, ‘H’ hole diam. 0.562; 4-bolt pump ‘E’ pilot dia 4.000, ‘F’ B.C. 5.000, ‘H’ hole diam. 0.562; spline spec. 15T 16/32, spline shaft 1.81, shaft & key diam. 1.000 x .250, shaft & key shaft length 1.81.
  • Size C: 2-bolt pump ‘E’ pilot dia 5.000, ‘F’ B.C. 7.125, ‘H’ hole diam. 0.688; 4-bolt pump ‘E’ pilot dia 5.000, ‘F’ B.C. 6.375, ‘H’ hole diam. 0.562; spline spec. 14T 12/24, spline shaft 2.19, shaft & key diam. 1.250 x .312, shaft & key shaft length 2.19.
  • Size C-C: 2-bolt pump ‘E’ pilot dia 5.000, ‘F’ B.C. 7.125, ‘H’ hole diam. 0.688; 4-bolt pump ‘E’ pilot dia 5.000, ‘F’ B.C. 6.375, ‘H’ hole diam. 0.562; spline spec. 17T 12/24, spline shaft 2.44, shaft & key diam. 1.500 x .375, shaft & key shaft length 2.44.
  • Size D: 2-bolt pump ‘E’ pilot dia 6.000, ‘F’ B.C. 9.000, ‘H’ hole diam. 0.812; 4-bolt pump ‘E’ pilot dia 6.000, ‘F’ B.C. 9.000, ‘H’ hole diam. 0.812; spline spec. 13T 8/16, spline shaft 2.94, shaft & key diam. 1.750 x .437, shaft & key shaft length 2.94.
  • Size E: 2-bolt pump ‘E’ pilot dia 6.500, ‘F’ B.C. 12.500, ‘H’ hole diam. 1.062; 4-bolt pump ‘E’ pilot dia 6.500, ‘F’ B.C. 12.500, ‘H’ hole diam. 0.812; spline spec. 13T 8/16, spline shaft 2.94, shaft & key diam. 1.750 x .437, shaft & key shaft length 2.94.
  • Size F: 2-bolt pump ‘E’ pilot dia 7.000, ‘F’ B.C. 13.781, ‘H’ hole diam. 1.062; 4-bolt pump ‘E’ pilot dia 7.000, ‘F’ B.C. 13.781, ‘H’ hole diam. 1.062; spline spec. 15T 8/16, spline shaft 3.44, shaft & key diam.: none, shaft & key shaft length: none.

SAE PTO Clutch
Application Fact Sheet