Product Description
The Martin SDS 40MM is a Quick Disconnect (QD) tapered bushing designed for fast, secure mounting of sprockets, sheaves, and pulleys onto shafts. It features a 40 mm metric finished bore with a 12 x 3.3 mm keyway, a self-locking 3/4"/ft taper on the barrel, and accepts conventional or reverse mounting orientations. Designed for horizontal shaft orientation, this bushing is industry-interchangeable with other major manufacturers' QD bushing systems of the same SDS series designation.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Martin (Martin Sprocket & Gear) |
| Model / Part Number | SDS 40MM |
| Bushing Size / Series | SDS |
| Bore Diameter | 40 mm (1.5748 in) |
| Bore Type | Finished with Keyway (Metric) |
| Keyway Size | 12 x 3.3 mm |
| Material | Ductile Iron / Steel |
| Shaft Orientation | Horizontal |
| Barrel Diameter | 2.187 in |
| Barrel Length | 0.875 in (7/8 in) |
| Flange Outside Diameter | 3.187 in (3.18 in) |
| Flange Thickness | 0.43–0.50 in |
| Hub Diameter | 3-1/2 in |
| Bolt Circle Diameter | 2.69 in (2-11/16 in) |
| Number of Bolt Holes | 3 |
| Cap Screw / Screw Size | 1/4-20 x 1-3/8 in |
| Screw Torque | 108 in-lbs |
| Length Through Bore (OAL) | 1.31 in (1-5/16 in) |
| Torque Rating | 5,000 in-lb |
| Barrel Taper | 3/4 in/ft (TPF) |
| Mounting Type | Conventional or Reverse |
| Flange Split | Yes |
| Weight | ~1.0–2.1 lbs |
We warranty all items for 30 days from date of purchase.
Other Details
We warranty all items for 30 days from date of purchase. If you experience any issues with your item within this period, please contact us and we will work with you to resolve the problem. This warranty covers defects in functionality but does not cover damage caused by misuse, improper installation, or normal wear and tear.Product Videos
Custom Field
GTIN 679523686185
Hole Diameter 3.5 in
Material Ductile Iron / Steel
Torque 108 in-lbs
Diameter 3.5 in
Manufacturer Martin
Empty Weight 1.0-2.1 lbs
Part Number SDS 40MM
Capacity 5000 in-lb
Series SDS
Shelf A-3
Bore Diameter 40 mm
Model SDS 40MM
MPN SDS 40MM
Type QD Bushing
