Spline Shafts and Couplings | Raptor Supplies United Kingdom

Spline Shafts And Couplings

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Spline shafts and couplings are used in power transmission systems to transfer torque and rotation from one component to another. Spline shafts have a long, cylindrical rod-type design with...Read more

StyleModelRough Stock BoreMax. BoreLength through BoreOutside Dia.Overall LengthRated TorqueMax. Shock LoadPrice (inc. VAT)
A685144260811"2.225"2.5"6.28"7.44"2000 In.Lbs.6000 In.Lbs.£1,359.51
A685144260852-1/8"4"4.34"11.09"12.66"12000 In.Lbs.36000 In.Lbs.£4,883.63
HUB CITY -

Involute Splined Shafts

StyleModelPrice (inc. VAT)
A0332-00025£183.86
RFQ
B0332-00395£226.45
RFQ
BALDOR / DODGE -

Coupling And Drive Shafts

StyleModelPrice (inc. VAT)
A352091£395.22
A352090£395.22
A243563£471.23
StyleModelCoupling SizeDimension ADimension FDimension GDimension HDimension JFree End Float +/-Inertia At D Min.Price (inc. VAT)
AAP30305.63"1.88"0.47"3.3"1.14"0.065"77.7 lbs.-sq. ft.£10.20
AAP35356.63"2 1/4"0.55"4.15"0.97"0.085"156 lbs.-sq. ft.£11.15
StyleModelCoupling SizeDimension HdLength Through BoreMax. BoreMax. Speed (unbalanced)Min. BoreNominal TorqueOutside Dia.Price (inc. VAT)
A68514426074H30677.000"4.750"4.500"2300 rpm2.125"33396 in.-lbs.10.000"-
RFQ
A68514426076H36678.750"5.630"5.625"1900 rpm3.000"64812 in.-lbs.12.000"-
RFQ
A68514455471H40679.750"6.250"6.250"1800 rpm3.250"88224 in.-lbs.13.250"£15,205.70
A68514455474H456710.750"7.000"7.000"1500 rpm3.500"119700 in.-lbs.14.500"-
RFQ
HUB CITY -

Involute Splined Couplings

StyleModelPrice (inc. VAT)
A0332-00030£199.57
RFQ
B0332-00028£89.68
RFQ
C0332-00043£91.94
RFQ
D0332-00027£85.19
RFQ
E0332-00350£95.30
RFQ
HUB CITY -

Splined Couplings

StyleModelPrice (inc. VAT)
A0332-00342£107.26
RFQ
A0332-00066£96.15
RFQ
A0332-00346£188.35
RFQ
A0332-00365£120.81
RFQ
A0332-00344£75.11
RFQ
A0332-00351£235.47
RFQ
B0332-00341£79.60
RFQ
C0332-00345£76.21
RFQ
A0332-00337£77.67
RFQ
A0332-00336£77.67
RFQ
A0332-00338£87.53
RFQ
A0332-00340£91.69
RFQ
A0332-00320£89.68
RFQ
A0332-00349£196.02
RFQ
A0332-00348£109.87
RFQ
A0332-00367£145.47
RFQ
HUB CITY -

Splined Shafts

StyleModelPrice (inc. VAT)
A0332-00026£243.29
RFQ
A0332-00399£357.50
RFQ
A0332-00038£483.26
RFQ
A0332-00397£347.66
RFQ
A0332-00391£163.96
RFQ
A0332-00390£115.46
RFQ
B0332-00394£89.68
RFQ
A0332-00393£159.04
RFQ
A0332-00398£226.45
RFQ
A0332-00023£145.47
RFQ
A0332-00039£492.18
RFQ
StyleModelAngular MisalignmentCoupling SizeDimension BDimension CDimension HMax. Angular MisalignmentMax. BoreMax. Bore O/s
ATFI00380.5°386.3"1.77"2.891"-2.19" , 58" , 76"3"
RFQ
ATFI01400.5°1409.84"2.95"3.757"-2 3/4" , 75"-
RFQ
ATFI07500.5°75016.14"4.72"6.46"-132" , 4.63"-
RFQ
ATFI13100.5°131019.29"5.71"7.76"-162" , 5.63"-
RFQ
ATFI00270.5°275.91"1.57"2.143"0.5° /disc pack1.56" , 42" , 57"2 1/4"
RFQ
ATFI02600.5°26011.42"3.35"4.662"0.5° /disc pack3.44" , 95"-
RFQ
ATFI04000.5°40013.78"4.13"5.568"-116" , 4.19"-
RFQ
ATFI19000.33°190019.69"5.91"9.17"-192" , 6 3/4"-
RFQ
ATFI60000.33°600028.35"9.06"12.68"-265" , 9"-
RFQ
ATFI120000.33°1200036.38"11.5"16.02"0.33° /disc pack11.5" , 337"-
RFQ
ATFI25000.33°250021.57"6.46"9.45"0.33° /disc pack197" , 6.88"-
RFQ
ATFI33000.33°330023.78"7.17"10.63"-220" , 7.63"-
RFQ
ATFI85000.33°850033.07"10.24"14.37"0.33° /disc pack10.63" , 302"-
RFQ
StyleModelCoupling SizeDimension ADimension BDimension FDimension HDimension JFree End Float +/-InertiaPrice (inc. VAT)
AAX30305.63"6.3"1.88"3.3"3.18"0.065"51.7 lbs.-sq. ft.£13.46
AAX35356.63"7.17"2 1/4"4.15"2.81"0.085"108 lbs.-sq. ft.£14.96
TB WOODS -

GCH Form Flex Couplings

TB Wood's GCH Form-Flex couplings are designed to connect two shafts for efficient power transmission applications in screw compressors, cooling towers or printing presses. These couplings come in a robust disc pack design for greater torque loads and lower weight per HP for a better inherent balance, as compared to rigid couplings. The high torsional stiffness feature of these couplings maintains the structural integrity of the system while counterbalancing angular or axial misalignments. They are integrated with a fail-safe mechanism that gets activated, when the element is damaged, by simply transmitting rotary motion via washers.

StyleModelCoupling SizeDimension ADimension BDimension CDimension DDimension GFree End Float +/-Inertia
AGCH340-353408.38"2.88"5.44"4.71"0.57"0.06"349 lbs.-sq. ft.
RFQ
AGCH340-313408.38"2.88"5.44"4.14"0.57"0.06"344 lbs.-sq. ft.
RFQ
AGCH412-4541211"4 1/4"6.51"6.07"1 1/4"0.08"1387 lbs.-sq. ft.
RFQ
AGCH412-5041211"4 1/4"6.51"7.19"1 1/4"0.08"1418 lbs.-sq. ft.
RFQ
AGCH412-4241211"4 1/4"6.51"5.57"1 1/4"0.08"1373 lbs.-sq. ft.
RFQ
AGCH424-5542415"6 1/4"9.57"7.45"0.98"0.1"7157 lbs.-sq. ft.
RFQ
AGCH424-6042415"6 1/4"9.57"8.45"0.98"0.1"7277 lbs.-sq. ft.
RFQ
AGCH456-7045618"7 1/4"11.63"9.63"1.32"0.12"19517 lbs.-sq. ft.
RFQ
AGCH456-7545618"7 1/4"11.63"10.7"1.32"0.12"19793 lbs.-sq. ft.
RFQ
AGCH511-9251122"9"14.5"13.89"1.56"0.14"64414 lbs.-sq. ft.
RFQ
AGCH511-8551122"9"14.5"12.39"1.56"0.14"55013 lbs.-sq. ft.
RFQ
AGCH511-8051122"9"14.5"11.39"1.56"0.14"54372 lbs.-sq. ft.
RFQ
TB WOODS -

GCF Form Flex Couplings

TB Wood's GCF Form-Flex couplings are designed to transmit torque while compensating for angular, parallel and axial misalignments between two connected shafts. These couplings are integrated with a flexible disc to minimise the misalignment errors and feature a high torsional stiffness for maintaining the structural integrity of the system.

StyleModelAdapter BcdAdapter BoltingAdapter Outer Dia.Adapter Outside Dia.Adapter SizeAdapter TypeCoupling SizeDimension A
AGCF340-31-12HD11.5"HD12.375"12.375"12-3408.38"
RFQ
AGCF340-35-12HD11.5"HD12.375"-12HD3408.38"
RFQ
AGCF340-35-12SAE11.625"SAE12.375"12.375"12-3408.38"
RFQ
AGCF340-31-12SAE11.625"SAE12.375"-12SAE3408.38"
RFQ
AGCF340-35-14HD12.5"HD13 7/8"13.875"14-3408.38"
RFQ
AGCF340-35-14SAE13.125"SAE13 7/8"-14SAE3408.38"
RFQ
AGCF340-31-14SAE13.125"SAE13 7/8"13.875"14-3408.38"
RFQ
AGCF424-55-18HD16.75"HD18.375"18.375"18-42415"
RFQ
AGCF412-50-18HD16.75"HD18.375"18.375"18-41211"
RFQ
AGCF340-35-18HD16.75"HD18.375"18.375"18-3408.38"
RFQ
AGCF412-45-18HD16.75"HD18.375"-18HD41211"
RFQ
AGCF424-60-18HD16.75"HD18.375"-18HD42415"
RFQ
AGCF412-45-18SAE17.25"SAE18.375"18.375"18-41211"
RFQ
AGCF412-42-18SAE17.25"SAE18.375"18.375"18-41211"
RFQ
AGCF412-50-18SAE17.25"SAE18.375"18.375"18-41211"
RFQ
AGCF340-35-18SAE17.25"SAE18.375"18.375"18-3408.38"
RFQ
AGCF424-60-18SAE17.25"SAE18.375"18.375"18-42415"
RFQ
AGCF340-31-18SAE17.25"SAE18.375"18.375"18-3408.38"
RFQ
AGCF424-55-18SAE17.25"SAE18.375"-18SAE42415"
RFQ
AGCF424-55-20HD18.5"HD20.375"20.375"20-42415"
RFQ
AGCF340-31-20HD18.5"HD20.375"-20HD3408.38"
RFQ
AGCF412-50-20HD18.5"HD20.375"-20HD41211"
RFQ
AGCF340-35-20HD18.5"HD20.375"-20HD3408.38"
RFQ
AGCF412-42-20HD18.5"HD20.375"20.375"20-41211"
RFQ
AGCF424-60-20HD18.5"HD20.375"20.375"20-42415"
RFQ
Stafford Mfg -

Signature Series, One Piece Split Precision Sleeve Couplings

StyleModelBore SizeKeyway SizeOutside Dia.Screw SizeTotal LengthPrice (inc. VAT)
A5L100100KPSC1"1/4"2"1/4-28 x 3/43"£143.21
RFQ
B5L100100FKPSC1"1/4"2"1/4-28 x 3/43"£185.71
RFQ
A5L108108KPSC1-1/2"3/8"2.500"1/4-28 x 3/43.750"£209.17
RFQ
B5L108108FKPSC1-1/2"3/8"2.500"1/4-28 x 3/43.750"£238.16
RFQ
A5L104104KPSC1-1/4"1/4"2.250"1/4-28 x 3/43.375"-
RFQ
B5L104104FKPSC1-1/4"1/4"2.250"1/4-28 x 3/43.375"-
RFQ
A5L008008KPSC1/2"1/8"1.250"8-32 x 1/21.875"£116.98
RFQ
B5L008008FKPSC1/2"1/8"1.250"8-32 x 1/21.875"£155.43
RFQ
A5L012012KPSC3/4"3/16"1.750"1/4-28 x 3/42.625"£133.69
RFQ
B5L012012FKPSC3/4"3/16"1.750"1/4-28 x 3/42.625"£156.02
RFQ
A5L010010KPSC5/8"3/16"1.500"10-32 x 5/82.250"£141.72
RFQ
B5L010010FKPSC5/8"3/16"1.500"10-32 x 5/82.250"£181.43
RFQ
TB WOODS -

HSH Form Flex Couplings

TB Wood's HSH Form-Flex couplings are designed to transmit torque while compensating for angular, parallel and axial misalignment between two connected shafts. They minimise misalignment forces on the connected equipment and are widely used in cooling fan drive applications. These couplings are available with steel and composite spacer tubing that reduces total cost by eliminating the need for bearings and support structures. The brand's HSH Series Form-Flex couplings range from 1000 rpm to 3800 rpm. A wide range of these couplings (with bore length up to 11 inches) is available on Raptor Supplies.

StyleModelCoupling SizeDimension ADimension BDimension DDimension FDimension GDimension HFree End Float +/-
AHSH22225.88"8.02"3.02"2 1/2"0.43"3.87"0.036"
RFQ
AHSH26266.88"9.25"3 1/2"2.88"0.55"4 1/2"0.044"
RFQ
AHSH31318.12"10.87"4.12"3.37"0.62"5 1/2"0.052"
RFQ
AHSH35359.12"12.06"4.57"3 3/4"0.66"6.12"0.056"
RFQ
AHSH373710.06"13.12"5.14"4"0.81"6 1/2"0.062"
RFQ
AHSH424211"13.93"5.43"4 1/4"0.81"7"0.067"
RFQ
AHSH454511.87"14.75"5 3/4"4 1/2"0.87"7.43"0.072"
RFQ
AHSH505012.9"16.81"6.81"5"1.06"8.37"0.082"
RFQ
AHSH555515"18.68"7.68"5 1/2"1 1/4"9.5"0.092"
RFQ
AHSH606016"20.93"8.43"6 1/4"1.34"10.5"0.102"
RFQ
AHSH707018.5"23.62"9.56"7"1 1/2"11 3/4"0.115"
RFQ
AHSH757520"25"10.5"7 1/4"1.53"13"1/8"
RFQ
AHSH808022"26.87"11.37"7 3/4"1.56"13.75"0.136"
RFQ
AHSH858523.75"28.62"12.12"8.25"1.62"14.5"0.14"
RFQ
AHSH929225.75"31"13.01"9"1 3/4"15.87"0.156"
RFQ
AHSH92HT92HT25.75"31"13.01"9"1 3/4"15.87"0.156"
RFQ
StyleModelBore SizeItemPrice (inc. VAT)
A685144138723/4"Flange To Shaft Coupling£737.31
A685144138705/8"Shaft and Coupling£719.59
StyleModelAxial Misalignment (Δ Ka)Bore SizeDimension HdHub SizeItemLength Through BoreMax. BoreMax. Parallel Misalignment (in.)Price (inc. VAT)
A685144130150.01"1/4 x 1/4"0.61"U18RShaft and Coupling0.31"0.25"0.008"£346.50
A685144130400.02"5/16 x 5/16"0.73"U25RShaft and Coupling0.38"0.313"0.011"£422.67
A685144260950.02"1/4 x 1/4"0.73"U25RShaft and Coupling0.38"0.313"0.011"£336.01
A685144130840.02"3/8 x 3/8"0.86"U37RFlange To Shaft Coupling0.52"0.375"0.014"£513.50
A685144132090.035"5/16 x 5/16"1.42"U62RShaft and Coupling0.84"0.625"0.019"£597.33
A685144131390.035"1/2 x 1/2"1.04"U50RShaft and Coupling0.64"0.5"0.021"£544.92
A685144442170.035"3/8 x 3/8"1.04"U50RShaft and Coupling0.64"0.5"0.021"£544.92
A685144510460.035"5/16 x 5/16"1.04"U50RShaft and Coupling0.64"0.5"0.021"£433.20
A685144510370.04"3/8 x 3/8"1.42"U75RShaft and Coupling0.84"0.75"0.028"£737.31
StyleModelAxial Misalignment (Δ Ka)Bore SizeDimension HdHub SizeItemKeyway SizeLength Through BoreMax. BorePrice (inc. VAT)
A685144132550.035"5/8 x 5/8"1.42"U62RShaft and Coupling3/16 x 3/32"0.84"0.625"£597.33
A685144443070.035"1/2 x 5/8"1.42"U62RShaft and Coupling1/8 x 1/16 And 3/16 x 3/32"0.84"0.625"£597.33
A685144133510.04"3/4 x 3/4"1.42"U75RShaft and Coupling3/16 x 3/32"0.84"0.75"£719.59
A685144442190.04"1 3/8 x 1 7/16"2.98"U150RShaft and Coupling5/16 x 5/32 And 3/8 x 3/16"1.88"1.5"£2,050.20
A685144441080.04"5/8 x 3/4"1.42"U75RShaft and Coupling3/16 x 3/32"0.84"0.75"£737.31
A685144260990.04"5/8 x 5/8"1.42"U75RShaft and Coupling3/16 x 3/32"0.84"0.75"£719.59
A685144483250.04"3/4 x 3/4"2.17"U125RShaft and Coupling3/16 x 3/32"1.28"1.25"£1,254.60
A685144134610.04"1 x 1"2.11"U100RShaft and Coupling1/4 x 1/8"1.29"1"£1,110.82
A685144261050.04"3/4 x 3/4"2.11"U100RShaft and Coupling3/16 x 3/32"1.29"1"£1,124.91
A685144135410.04"1 1/4 x 1 1/4"2.17"U125RFlange To Shaft Coupling1/4 x 1/8"1.28"1.25"£1,254.60
A685144134090.04"7/8 x 7/8"1.73"U87RShaft and Coupling3/16 x 3/32"0.84"0.875"£782.48
StyleModelBore SizeCoupling SizeDimension BcDimension DDimension FdDimension Fl1Dimension HdDimension HlPrice (inc. VAT)
A685144137403/8"RRU752"2.38"2.5"0.38"2.5"1.25"£226.59
RFQ
A685144136957/16"RRU501.5"1.88"2"0.25"2"1"£178.83
RFQ
TB WOODS -

A5 Form Flex Couplings

TB Wood’s A5 Form-Flex couplings are designed for transmiting torque while compensating for axial, angular & parallel misalignment between two connected shafts. These easy-to-install couplings protect equipment from shock, vibration & misalignment, and are widely used in cooling fan drive applications. These metal couplings have zero backlash & high torsional stiffness and are ideal for printing applications & positioning systems. The brand’s A5 Series flexible couplings are available in 0.48, 1.27, 3.49, 6.03 & 18 HP ratings at 100 rpm. Choose from a wide range of TB Wood’s flex couplings in 5, 10, 20, 25 & 35 sizes on Raptor Supplies.

StyleModelCoupling SizeDimension ADimension FDimension GDimension HFree End Float +/-Inertia At D Min.Max. BorePrice (inc. VAT)
AA50552.65"1"0.24"1.3"0.03"1.93 lbs.-sq. ft.0.88" , 1.19"-
RFQ
AA510103.19"1"0.27"1.8"0.04"4.83 lbs.-sq. ft.1 1/4" , 1.63"-
RFQ
AA515153.65"1.13"0.32"2"0.042"9.36 lbs.-sq. ft.1 3/4" , 1.38"-
RFQ
AA520204.08"1.32"0.34"2.4"0.055"15.36 lbs.-sq. ft.1.69" , 2.13"-
RFQ
AA525254.95"1.62"0.45"2.8"0.06"42.07 lbs.-sq. ft.2" , 2.56"-
RFQ
AA530305.63"1.88"0.47"3.3"0.065"84.97 lbs.-sq. ft.2.38" , 2.88"£44.03
RFQ
AA535356.63"2 1/4"0.55"4.15"0.085"170.84 lbs.-sq. ft.2.94" , 3 3/4"-
RFQ
StyleModelCoupling SizeDimension ADimension BDimension DDimension FDimension HDimension JFree End Float +/-
AAR552.65"2.24"0.24"1"1.3"0.54"0.015"
RFQ
AAR10103.19"2.27"0.27"1"1.8"0.59"0.02"
RFQ
AAR15153.65"2.58"0.32"1.13"2"0.88"0.021"
RFQ
AAR20204.08"2.98"0.34"1.32"2.4"0.79"0.027"
RFQ
AAR25254.95"3.69"0.45"1.62"2.8"1"0.03"
RFQ
AAR30305.63"4.23"0.47"1.88"3.3"1.14"0.032"
RFQ
AAR35356.63"5.05"0.55"2 1/4"4.15"0.97"0.042"
RFQ
TB WOODS -

FSH Form Flex Couplings

TB Wood's FSH Form-Flex couplings are designed to transmit torque while compensating for angular, parallel and axial misalignments between two connected shafts. These couplings feature a flexible disc to minimise the misalignment errors and offer high torsional stiffness to maintain the structural integrity of the system. Choose from a wide range of these TB Wood's couplings, available in 6 to 12 bolt hole options on Raptor Supplies.

StyleModelAdapter BcdAdapter BoltingAdapter Outer Dia.Adapter Outside Dia.Adapter SizeAdapter TypeCoupling SizeDimension A
AFSH31-10-HD9.5"HD10.375"10.375"10-318.12"
RFQ
AFSH31-10-SAE9.625"SAE10.375"-10SAE318.12"
RFQ
AFSH35-12-HD11.5"HD12.375"12.375"12-359.12"
RFQ
AFSH31-12-HD11.5"HD12.375"12.375"12-318.12"
RFQ
AFSH35-12-SAE11.625"SAE12.375"-12SAE359.12"
RFQ
AFSH31-12-SAE11.625"SAE12.375"12.375"12-318.12"
RFQ
AFSH35-14-HD12.5"HD13 7/8"13.875"14-359.12"
RFQ
AFSH45-14-HD12.5"HD13 7/8"13.875"14-4511.87"
RFQ
AFSH37-14-HD12.5"HD13 7/8"-14HD3710.06"
RFQ
AFSH42-14-HD12.5"HD13 7/8"13.875"14-4211"
RFQ
AFSH31-14-HD12.5"HD13 7/8"-14HD318.12"
RFQ
AFSH31-14-SAE13.125"SAE13 7/8"13.875"14-318.12"
RFQ
AFSH37-14-SAE13.125"SAE13 7/8"13.875"14-3710.06"
RFQ
AFSH35-14-SAE13.125"SAE13 7/8"13.875"14-359.12"
RFQ
AFSH42-14-SAE13.125"SAE13 7/8"-14SAE4211"
RFQ
AFSH31-18-HD16.75"HD18.375"18.375"18-318.12"
RFQ
AFSH35-18-HD16.75"HD18.375"-18HD359.12"
RFQ
AFSH37-18-HD16.75"HD18.375"18.375"18-3710.06"
RFQ
AFSH42-18-HD16.75"HD18.375"18.375"18-4211"
RFQ
AFSH60-18-HD16.75"HD18.375"-18HD6016"
RFQ
AFSH55-18-HD16.75"HD18.375"18.375"18-5515"
RFQ
AFSH50-18-HD16.75"HD18.375"18.375"18-5012.9"
RFQ
AFSH45-18-HD16.75"HD18.375"-18HD4511.87"
RFQ
AFSH45-18-SAE17.25"SAE18.375"18.375"18-4511.87"
RFQ
AFSH60-18-SAE17.25"SAE18.375"18.375"18-6016"
RFQ

Spline Shafts And Couplings

Hub City spline shafts are specially designed for transmitting high amount of torque force and rotation. These plain and involute splined shafts feature 1215 cold-rolled steel to deliver fair vibration damping and excellent chemical resistance. We also offer Hub City couplings in 1144 stress-proofed steel to connect and transmit torque between two rotating shafts. These couplers feature Kwik-D-Tach connection for safe and secure attachments.

Frequently Asked Questions

What is overall length tolerance?

OAL (overall length tolerance) refers to the allowable deviation from the nominal or desired length of the coupling. It helps to position and align the coupling on the shafts it is connecting.

What is the purpose of keyways in Lovejoy couplings?

Keyways are grooves or slots that are machined into the bore of the coupling hub and include a matching key that is installed in the keyway to connect the hub to the shaft. These keyways help transmit torque, ease installation and provide accurate alignment between the shaft and the coupling.

How to maintain a spline coupling?

  • Regular visual inspections are needed to identify any signs of wear or damage of the spline coupling, such as cracks and corrosion.
  • Ensure the coupling is properly aligned to maintain smooth operation and prevent premature wear.
  • Regularly lubricate the coupling to prevent wear and reduce friction.
  • Ensure that spline couplings are not subjected to overload conditions, as this can cause permanent deformation and reduce the strength of the spline teeth.

How do I select the right type of shaft coupling for my application?

The choice of coupling depends on shaft misalignment, torque requirements, speed and environmental conditions.

What is the difference between rigid couplings and flexible couplings?

Rigid couplings do not allow any angular or parallel misalignment between shafts. They provide a solid, backlash-free connection. In contrast, flexible couplings accommodate some degree of misalignment and are often used to dampen vibrations and shock loads in machinery.

How do I calculate the torque capacity of a spline shaft?

    To calculate the torque capacity of a spline shaft, you can use the formula:
    • Torque (T) = Shaft Diameter (D) x Material Strength (S) x Safety Factor (SF)

What is the difference between external spline and internal spline configurations?

External spline refers to the presence of the splines on the outside surface of a shaft, while internal spline refers to the splines inside a cylindrical bore.

How does rigid, flexible and fluid connection coupling differ from each other?

Rigid couplings provide a solid connection with no flexibility, flexible couplings offer misalignment compensation, and fluid couplings use hydraulic principles for torque transmission and speed control.

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