Poly Flex steel half couplings, coupling spacers and custom cotton reel adaptors are all CNC machined and designed in our facility, they are a steel mating component which is used between the gearbox and the output shaft, with or without a flexible coupling.
Adapter plates and cotton reel adaptors are available on request.
Metal components are plated in SA5 cobalt zinc for maximum corrosion resistance and durability.
Parallel Clamp Steel Half Couplings | Pilot Bored Steel Half Couplings Taper Lock Steel Half Couplings Custom Parallel Clamp Steel Half Couplings Custom Pilot Bored Steel Half Couplings Custom Taper Lock Steel Half Couplings Steel Shaft Coupling Spacers Custom Steel Shaft Coupling Spacers Steel Shaft Coupling Adaptor Custom Cotton Reel Adaptors Shaft Machining And Keyway Cutting
Parallel Clamp Steel Half Couplings
Swipe or scroll right to view all table data → Model Flange OD PCD Bolt Hole Clearance Spigot Diameter Spigot Type & Depth Shaft Size Body Length Boss Diameter Weight kg Data Sheet 424 101.6mm (4") 78mm (3.071") 4 x 11mm (0.433") 50mm (1.969") Male 2.5mm (0.098") 16 - 38mm (5/8 - 1 1/2") 90mm (3.543") 71mm (2.795") 2.4 (5.29lb) 434 4" (101.6mm) 3 1/4" (82.55mm) 4 x 10.5mm (0.413") 2 1/2" (63.5mm) Male 2.5mm (0.098") 16 - 38mm (5/8 - 1 1/2") 90mm (3.543") 71mm (2.795") 2.4 (5.29lb) 434F 4" (101.6mm) 3 1/4" (82.55mm) 4 x 10.5mm (0.413") 2 1/2" (63.5mm) Female 3.8mm (0.150") 16 - 38mm (5/8 - 1 1/2") 90mm (3.543") 71mm (2.795") 2.3 (5.07lb) 434P 4" (101.6mm) 3 1/4" (82.55mm) 4 x 10.5mm (0.413") 2 5/8" (66.7mm) Male 2.5mm (0.098") 16 - 38mm (5/8 - 1 1/2") 90mm (3.543") 71mm (2.795") 2.4 (5.29lb) 464 101.6mm (4") 80mm (3.150") 4 x 10.5mm (0.413") 60mm (2.362") Female 3.8mm (0.150") 16 - 38mm (5/8 - 1 1/2") 90mm (3.543") 71mm (2.795") 2.3 (5.07lb) 494 101.6mm (4") 74.5mm (2.933") 4 x 8.5mm (0.335") 47mm (1.850") Female 3.8mm (0.150") 16 - 38mm (5/8 - 1 1/2") 90mm (3.543") 71mm (2.795") 2.3 (5.07lb) 524 5" (127mm) 4 1/4" (107.95mm) 4 x 11.5mm (0.453") 2 1/2" (63.5mm) Male 3.5mm (0.138") 22 - 50mm (7/8 - 2") 93.5mm (3.681") 80mm (3.150") 3.5 (7.71lb) 528 5.24" (133.09mm) 4 1/4" (107.95mm) 8 x 11.5mm (0.453") 2 1/2" (63.5mm) Male 3.5mm (0.138") 22 - 50mm (7/8 - 2") 93.5mm (3.681") 80mm (3.150") 3.6 (7.93lb) 534 127mm (5") 100mm (3.937") 4 x 10.5mm (0.413") 65mm (2.559") Male 3.5mm (0.138") 22 - 50mm (7/8 - 2") 93.5mm (3.681") 80mm (3.150") 3.5 (7.71lb) 546 4 3/4" (120.65mm) 3 7/8" (98.42mm) 6 x 11.5mm (0.453") 2 1/2" (63.5mm) Female 5mm (0.197") 22 - 63mm (7/8 - 2 1/2") 116.1mm (4.572") 95mm (3.740") 4.9 (10.80lb) 616 1/2" A 6" (152.4mm) 4 3/4" (120.65mm) 6 x 13mm (0.512") 3" (76.2mm) Male 5mm (0.197") 38.1 - 76mm (1 1/2 - 3") 135.3mm (5.327") 120mm (4.724") 9.1 (20.06lb) 616 1/2" B 6" (152.4mm) 4 3/4" (120.65mm) 6 x 13mm (0.512") 3" (76.2mm) Female 5.7mm (0.224") 38.1 - 76mm (1 1/2 - 3") 135.3mm (5.327") 120mm (4.724") 8.6 (18.95lb) 616 5/8" 6" (152.4mm) 4 3/4" (120.65mm) 6 x 16.5mm (0.650") 3" (76.2mm) Female 5.7mm (0.224") 38.1 - 76mm (1 1/2 - 3") 135.3mm (5.327") 120mm (4.724") 8.6 (18.95lb)
Pilot Bored Steel Half Couplings
Swipe or scroll right to view all table data → Model Flange OD PCD Bolt Hole Clearance Spigot Diameter Spigot Type & Depth Shaft Size Body Length Boss Diameter Weight kg Data Sheet 424 101.6mm (4") 78mm (3.071") 4 x 11mm (0.433") 50mm (1.969") Male 2.5mm (0.098") 16 - 38mm (5/8 - 1 1/2") 90mm (3.543") 71mm (2.795") 2.6 (5.73lb) 434 4" (101.6mm) 3 1/4" (82.55mm) 4 x 10.5mm (0.413") 2 1/2" (63.5mm) Male 2.5mm (0.098") 16 - 38mm (5/8 - 1 1/2") 90mm (3.543") 71mm (2.795") 2.6 (5.73lb) 464 101.6mm (4") 80mm (3.150") 4 x 10.5mm (0.413") 60mm (2.362") Female 3.8mm (0.150") 16 - 38mm (5/8 - 1 1/2") 90mm (3.543") 71mm (2.795") 2.5 (5.51lb) 524 5" (127mm) 4 1/4" (107.95mm) 4 x 11.5mm (0.453") 2 1/2" (63.5mm) Male 3.5mm (0.138") 22 - 50mm (7/8 - 2") 93.5mm (3.681") 80mm (3.150") 3.8 (8.37lb) 528 5" (133.09mm) 4 1/4" (107.95mm) 8 x 11.5mm (0.453") 2 1/2" (63.5mm) Male 3.5mm (0.138") 22 - 50mm (7/8 - 2") 93.5mm (3.681") 80mm (3.150") 3.9 (8.59lb) 534 127mm (5") 100mm (3.937") 4 x 10.5mm (0.413") 65mm (2.559") Male 3.5mm (0.138") 22 - 50mm (7/8 - 2") 93.5mm (3.681") 80mm (3.150") 3.8 (8.37lb) 546 4 3/4" (120.65mm) 3 7/8" (98.42mm) 6 x 11.5mm (0.453") 2 1/2" (63.5mm) Female 5mm (0.197") 22 - 63mm (7/8 - 2 1/2") 116.1mm (4.572") 95mm (3.740") 5.3 (11.68lb) 616 1/2" A 6" (152.4mm) 4 3/4" (120.65mm) 6 x 13mm (0.512") 3" (76.2mm) Male 5mm (0.197") 25 - 76mm (1 1/2 - 3") 135.3mm (5.327") 120mm (4.724") 9.4 (20.72lb) 616 1/2" B 6" (152.4mm) 4 3/4" (120.65mm) 6 x 13mm (0.512") 3" (76.2mm) Female 5.7mm (0.224") 25 - 76mm (1 1/2 - 3") 135.3mm (5.327") 120mm (4.724") 9.3 (20.50lb) 616 5/8" 6" (152.4mm) 4 3/4" (120.65mm) 6 x 16.5mm (0.650") 3" (76.2mm) Female 5.7mm (0.224") 25 - 76mm (1 1/2 - 3") 135.3mm (5.327") 120mm (4.724") 9.2 (20.28lb)
Taper Lock Steel Half Couplings
Swipe or scroll right to view all table data → Model Flange OD PCD Bolt Hole Clearance Spigot Diameter Spigot Type & Depth Shaft Size Body Length Boss Diameter Weight kg Data Sheet 424 101.6mm (4") 78mm (3.071") 4 x 11mm (0.433") 50mm (1.969") Male 2.5mm (0.098") 16 - 31.75mm (5/8 - 1 1/4") 66mm (2.598") 65mm (2.559") 1.6 (3.52lb) 434 4" (101.6mm) 3 1/4" (82.55mm) 4 x 10.5mm (0.413") 2 1/2" (63.5mm) Male 2.5mm (0.098") 16 - 31.75mm (5/8 - 1 1/4") 66mm (2.598") 65mm (2.559") 1.6 (3.52lb) 464 101.6mm (4") 80mm (3.150") 4 x 10.5mm (0.413") 60mm (2.362") Female 3.8mm (0.150") 16 - 31.75mm (5/8 - 1 1/4") 66mm (2.598") 65mm (2.559") 1.5 (3.30lb) 524 5" (127mm) 4 1/4" (107.95mm) 4 x 11.5mm (0.453") 2 1/2" (63.5mm) Male 3.5mm (0.138") 22 - 44.45mm (7/8 - 1 3/4") 90.6mm (3.567") 80mm (3.150") 3.3 (7.27lb) 534 127mm (5") 100mm (3.937") 4 x 10.5mm (0.413") 65mm (2.559") Male 3.5mm (0.138") 22 - 44.45mm (7/8 - 1 3/4") 90.6mm (3.567") 80mm (3.150") 3.3 (7.27lb)
Custom Parallel Clamp Steel Half Couplings
Swipe or scroll right to view all table data → Model Flange OD PCD Bolt Hole Clearance Spigot Diameter Spigot Type & Depth Shaft Size Body Length Boss Diameter Weight kg Data Sheet 4" SB 4" (101.6mm) As Required As Required As Required As Required 16 - 38mm (5/8 - 1 1/2") 90mm (3.54") 71mm (2.79") 2.6 5" SB 5" As Required As Required As Required As Required 16 - 38mm (5/8 - 1 1/2") 90mm (3.54") 71mm (2.79") 3.4 6" SB 6" As Required As Required As Required As Required 16 - 38mm (5/8 - 1 1/2") 90mm (3.54") 71mm (2.79") 4.2 5" MB 5" As Required As Required As Required As Required 22 - 50mm (7/8 - 2") 93.5mm (3.68") 80mm (3.15") 3.9 6" MB 6" As Required As Required As Required As Required 22 - 50mm (7/8 - 2") 93.5mm (3.68") 80mm (3.15") 5.1 5" LB 5" As Required As Required As Required As Required 22 - 63mm (7/8 - 2 1/2") 116.1mm (4.57") 95mm (3.74") 5.6 6" LB 6" As Required As Required As Required As Required 22 - 63mm (7/8 - 2 1/2") 116.1mm (4.57") 95mm (3.74") 6.9 6" XLB 6" As Required As Required As Required As Required 38.1 - 76mm (1 1/2" - 3") 135.3mm (5.32") 120mm (4.72") 10.1 7" XLB 7" As Required As Required As Required As Required 38.1 - 76mm (1 1/2" - 3") 135.3mm (5.32") 120mm (4.72") 8" XLB 8" As Required As Required As Required As Required 38.1 - 76mm (1 1/2" - 3") 135.3mm (5.32") 120mm (4.72") 9" XLB 9" As Required As Required As Required As Required 38.1 - 76mm (1 1/2" - 3") 135.3mm (5.32") 120mm (4.72")
Custom Pilot Bored Steel Half Couplings
Swipe or scroll right to view all table data → Model Flange OD PCD Bolt Hole Clearance Spigot Diameter Spigot Type & Depth Shaft Size Body Length Boss Diameter Weight kg Data Sheet 4" SB 4" As Required As Required As Required As Required 16 - 38mm (5/8 - 1 1/2") 90mm (3.54") 71mm (2.79") 2.6 5" SB 127mm (5") As Required As Required As Required As Required 16 - 38mm (5/8 - 1 1/2") 90mm (3.54") 71mm (2.79") 3.4 6" SB 6" As Required As Required As Required As Required 16 - 38mm (5/8 - 1 1/2") 90mm (3.54") 71mm (2.79") 4.2 5" MB 5" As Required As Required As Required As Required 22 - 50mm (7/8 - 2") 93.5mm (3.68") 80mm (3.15") 3.9 6" MB 6" As Required As Required As Required As Required 22 - 50mm (7/8 - 2") 93.5mm (3.68") 80mm (3.15") 5.1 5" LB 5" As Required As Required As Required As Required 22 - 63mm (7/8 - 2 1/2") 116.1mm (4.57") 95mm (3.74") 5.6 6" LB 6" As Required As Required As Required As Required 22 - 63mm (7/8 - 2 1/2") 116.1mm (4.57") 95mm (3.74") 6.9 6" XLB 6" As Required As Required As Required As Required 38.1 - 76mm (1 1/2" - 3") 135.3mm (5.32") 120mm (4.72") 10.1 7" XLB 7" As Required As Required As Required As Required 38.1 - 76mm (1 1/2" - 3") 135.3mm (5.32") 120mm (4.72") 8" XLB 8" As Required As Required As Required As Required 38.1 - 76mm (1 1/2" - 3") 135.3mm (5.32") 120mm (4.72") 9" XLB 9" As Required As Required As Required As Required 38.1 - 76mm (1 1/2" - 3") 135.3mm (5.32") 120mm (4.72")
Custom Taper Lock Steel Half Couplings
Swipe or scroll right to view all table data → Model Flange OD PCD Bolt Hole Clearance Spigot Diameter Spigot Type & Depth Shaft Size Body Length Boss Diameter Weight kg 4" TL 4" As Required As Required As Required As Required 16 - 31.75mm 5/8 - 1 1/4" 76.5mm 65mm 1.7 5" TL 5" As Required As Required As Required As Required 22 - 44.45mm 7/8 - 1 3/4" 90.6mm 80mm
Steel Shaft Coupling Spacers
Swipe or scroll right to view all table data → Model Flange OD (G) PCD (F) Bolt Hole Clearance Spigot Diameter (E) Spigot Type & Depth Thickness (A) Weight kg 424 101.6mm 78mm 4 x 11mm 50mm Male 2.6mm Female 5mm 30mm 1.5 434 4" 3 1/4" 4 x 10.5mm 2 1/2" Male 2.6mm Female 5mm 30mm 1.5 464 101.6mm 80mm 4 x 10.5mm 60mm Female 5mm Male 2.8mm 30mm 1.5 524 5" 4 1/4" 4 x 11.5mm 2 1/2" Male 3mm Female 5mm 38mm 3 534 127mm 100mm 4 x 10.5mm 65mm Male 3mm Female 5mm 38mm 3
Custom Steel Shaft Coupling Spacers
Swipe or scroll right to view all table data → Model Flange OD (G) PCD (F) Bolt Hole Clearance Spigot Diameter (E) Spigot Type & Depth Thickness (A) Weight kg 4" CSP 4" As Required As Required As Required As Required 30 mm 1.8 5" CSP 5" As Required As Required As Required As Required 38mm 3.7 6" CSP 6" As Required As Required As Required As Required 38mm 7" CSP 6" As Required As Required As Required As Required As Required 8" CSP 6" As Required As Required As Required As Required As Required 9" CSP 6" As Required As Required As Required As Required As Required
Steel Shaft Coupling Adaptor
Swipe or scroll right to view all table data → Model Flange OD (G) PCD Gearbox Shaft Side Bolt Hole Clearance Gearbox Shaft Side Spigot Diameter Gearbox Shaft Side Spigot Type & Depth Gearbox Shaft Side Thickness (A) Weight kg 434 to 424 4" (101.6mm) 3 1/4" 78mm 4 x 10.5mm 4 x 11mm 2 1/2" 50mm Male 2.6mm Female 5mm 15mm 434 to 464 4" (101.6mm) 3 1/4" 80mm 4 x 10.5mm 4 x 10.5mm 2 1/2" 60mm Male 2.6mm Male 2.8mm 15mm
Custom Cotton Reel Adaptors What Machine Does Poly Flex Use For Shaft Machining And Keyway Cutting ?Quality control plays a pivotal role in the machining of shafts. Consistent inspections are carried out to verify that the shaft dimensions conform to specified standards, guaranteeing that the end product is accurately machined and ready for installation. At Poly Flex, all our shaft couplings are meticulously crafted from start to finish within our top-notch CNC lathe and mill systems to ensure their perfect alignment. These couplings are precision-bored to the exact shaft size using an H7 Morse taper shank reamer, ensuring they match the precise specifications of each customer. Before and after shaft machining, they are meticulously checked for accuracy. The use of a reamer in boring a shaft is employed to attain superior precision in hole diameter.
For all shaft machining and keyway cutting procedures, Poly Flex employs the JFMT Ji-460 Lathe, exclusively dedicated to these tasks. We consistently monitor and inspect this lathe to ensure that all shaft couplings leaving our factory meet the highest quality standards.
Lathe Poly Flex incorporates CNC machining into our daily operations for all our internally designed and produced items, encompassing various aspects of our CNC machining procedures. We take great pride in our ability to design and manufacture a wide spectrum of products, ranging from large production line orders to personalised one-of-a-kind orders and prototypes.
