OVER 88,000 STANDARD
MECHANICAL COMPONENTS
Established in 1950, SDP/SI is the leading manufacturer
and supplier of high-quality machined parts, molded components, precision gears and gear assemblies.
We offer 3D CAD models of our products
Here's how to find them!
Request your FREE Inch and Metric catalogs
more than 2,784 pages of parts, specifications and technical data
Can be customized to your specifications
SDP/SI Engineers are power transmission design specialists
Industrial Timing Belts:
Standard Widths
Custom Widths
Timing Belts and Cabels Quick Links:
Cables Accessories:
Timing Belt Clamps
Timing Belt Tension Meters
Timing Belt Tensioners
Pulleys:
Offered in both metal and plastic to match belt profiles
Wide variety of miniature pulleys and matching timing belts.
Ladder Chain and Roller Chain:
For Light Duty to Heavy Duty Applications
Metal and Self-Lubricating Plastic
Sprockets:
Offered in metal and plastic
Sub-miniature, miniature and small sizes
Precision and Commercial Gears:
Standard & Custom
Spur Gears
Anti-Backlash Gears
Mini-Lash Gears
Helical Gears
Pinions
Gear Racks
Round Gear Racks
Internal Gears
Miter and Bevel Gears
Anti-Backlash Worm Gears
Worm Gears and Worms
Gear Clamps
Differentials
Planetary Gears
Speed Reducers/Increasers
Gearboxes
Custom Design
Precision Gear Cutting
Assembly
MOTORS, GEARHEADS,
& MOTION CONTROL
DC Motors
DC Geared Motors
AGV Kits & AGV Geared Motors
Controllers
Integrated Motor Controllers
Gearheads
AC Motors
Sensors, Cables, & Misc. Components
Small Gearmotors
RIGHT-ANGLE
GEAR DRIVES &
SPEED REDUCERS
Bevel Gearboxes
Worm and Bevel Gear Drives
Worm Gear Speed Reducers
Helical Gear Speed Reducers
Miniature Gear Drives
Standard Components and Build-to-Print Custom Parts and Assemblies
SHAFT COUPLINGS
Rigid & Flexible Shaft Couplings:
Heavy-Duty Flexible Couplings
Miniature Bellows Type Flexible Couplings
Modular Bellows Type Flexible Couplings
(built to meet your specific need)
Powerful Magnetic Disk Couplings
VIBRATION &
SHOCK MOUNTS
Miniature, lightweight shock absorbing components for instrumentation, camera mounts and other high-tech applications
Heavy-duty machine mounts for industrial applications
Vibration reduction mounts for HVAC
A wide assortment of clutches and brakes are offered to meet demand.
In-Line Slip Clutches providing adjustable torque
Spring-Wrapped Slip Clutches for long life and unidirectional or bidirectional operations
Magnetic Clutches operate in some of the most difficult environments
Bearings
Precision & Commercial Bearings:
Ball Bearings
Flange Mounted Bearings
Housing-Bearing & Pillow Block
Linear Bearings
Needle Roller Bearings
Pillow Block Bearings
Press-Fit Bearings
Rod End Bearings
Sintered Bronze Bars
Sleeve Bearings
Spherical Bearings
Thrust Bearings & Components