Poggi®

GDR Barrelled Tooth Nylon Sleeve Couplings – Zero Maintenance, High Misalignment Tolerance (GDR Series)Perfect for industrial transmissions, pumps, compressors, conveyors, fans and machinery requiring flexible, maintenance-free shaft connections.Why Choose GDR Nylon Sleeve Couplings?

Extremely forgiving – compensates large axial, radial and angular shaft misalignments
100 % maintenance-free – no lubrication, no wear parts to replace
Silent and vibration-damping thanks to the polyamide sleeve
Electrically insulating (no stray currents between shafts)
Lightweight and cost-effective compared to gear, grid or disc couplings
Quick and easy assembly – components supplied separately for maximum flexibility
Temperature resistant from –25 °C to +90 °C (short peaks +125 °C)

Technical Highlights

Hubs: High-strength C40 steel (UNI EN 10083-2), precision machined and toothed
Sleeve: High-performance Nylon 6.6 internally moulded barrelled teeth
Misalignment capability:
– Axial: ±1.5–3 mm (depending on size)
– Radial: up to 1.2°
– Angular: up to 1.5° per hub
Torque range: 8 Nm – 2,400 Nm
Bore range: Ø8 – Ø100 mm
Delivered as separate components (1 sleeve + 2 hubs) – choose standard or extended hubs as required

Most Searched GDR Models (Ready to Ship)

Model	Max Torque	Max RPM	Bore Range	Common Search Terms
GDR 3,6/28	90 Nm	8,000	8–28 mm	GDR 28 coupling, nylon sleeve 24C28
GDR 4,7/38	180 Nm	6,500	12–38 mm	GDR 38, 24C38 sleeve
GDR 6/42	340 Nm	6,000	14–42 mm	GDR 42 coupling, polyamide sleeve
GDR 8/55	700 Nm	5,000	20–55 mm	GDR 55, barrelled tooth coupling
GDR 10/65	1,200 Nm	4,500	25–65 mm	GDR 65 nylon sleeve coupling
GDR 12/75	2,400 Nm	4,000	30–75 mm	GDR 75, high torque flexible coupling

Example Order – GDR 3,6/28 with one extended hub

1 × Nylon sleeve → code 24C28
1 × Standard hub → code 24MN28
1 × Extended hub → code 24MP28

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GDR - Barrelled Nylon Sleeve Coupling – Maintenance-Free Flexible Shaft Coupling (Steel Hubs + PA6.6 Sleeve)