Stock Drive Products & Sterling Instrument - SDP/SI - Shipping Fees Simplified in the SDP/SI eStore

The new shipping module uses real-time calculation from UPS servers, based on the weight and delivery location of the order. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Mini-lash gears eliminate backlash in gear trains.

A built-in torsion spring, mounted around the hub, forces the two gear halves to turn in opposing directions relative to one another until the tooth space between the mini-lash gear and a mating gear is entirely filled. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Mini-pitch timing belts for use in limited space

The teeth of the Neoprene belt are faced with extra durable wear resistant nylon fabric that eliminates the need for lubrication. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - HTD® 5 mm Series of Molded Timing Belt Pulleys

HTD® 5 mm Pitch Series of Molded Timing Belt Pulleys From SDP Feature The Fairloc® Hub Fastening System (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Miniature Pillow Block Ball Bearings from SDP

With an aluminum housing, stainless steel bearing and double shielding, they have excellent corrosion resistance, making them suitable for medical, scientific and pharmaceutical applications. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Module 0.5, Precision Spur Gears with Hub from SI

Precision spur gears are stocked in 3 and 5 mm face widths and have bore diameters of 10 mm. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Fairloc® Bellows couplings from SDP

These 14 couplings are designed to fit shafts ranging in diameter from .1200" to .3750" (3 mm to 12 mm). (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - SUPER-PLAST® U-Joints: the best of both worlds

The economy of plastic, and the fastening characteristics of metal-to-metal contact. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Miniature Components for Big Ideas!

SDP & SI provide a comprehensive selection of fine pitch inch and metric spur gears, mini pitch belts and pulleys as well as miniature shafts & shafting accessories. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Miniature Slip Clutches Feature Unique Design

These clutches are ideal for compact applications requiring tension control of paper, film, wire, etc. Examples include paper handling, packaging equipment, conveyors, and textile machinery. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Precision Gear & Dial Hubs featuring Fairloc® Hubs

Fairloc® permits frequent phase adjustment, timing and position adjustment while adding positive metal-to-metal fastening strength along both hub sections. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - The Ultimate Fastening Device: Shaftloc® from SDP

Shaftloc® from SDP is the superior way to fasten rotating parts. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - SDP Timing Belt Pulleys in Small Pitch Sizes

Small Pitch Timing Belt Pulleys offered by SDP, transmit power efficiently in small spaces with minimum noise. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - High load capacity ACME lead screws from SDP

All SDP Acme lead screws are made of high-quality 300 series stainless steel, and offer excellent corrosion resistance. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Zero Backlash Miniature Helical Couplings from SDP

Miniature Helical Couplings are extremely lightweight, ranging from approximately 22 grams to 60 grams. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Unique lattice design allows for high torque loads

35 couplings from SDP feature unique lattice design which allows for very large axial, radial, and angular misalignments while transmitting high torque loads with zero backlash. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - SDP Flexible Couplings With Splined Sleeve

Splined Sleeve Flexible Couplings From SDP Offer Torsional Resiliency and High Flexibility (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Flexible Couplings From SDP Offers Zero Backlash

These couplings are designed for use in a variety of applications including: encoders, measuring equipment, positioning systems, robotics, servo systems, tachometers, and test equipment. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Mechanical Slip-Ease® Clutches from SDP

These clutches are commonly used for overload protection to prevent injury and machine failure, but have a wide variety of other applications such as tension control and positioning retention hinges like the ones in reclining chairs. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Miniature right angle gear drives from SDP

These drives are available with single or double output shafts, ratios of 1:1 or 2:1 and a maximum of 1800 rpms. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Phosphor Bronze Worm gears from SDP

All metal construction for use in a wide variety of instrumentation applications. The worm gears are made of phosphor bronze and the worms of hardened steel. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Differentials from SI feature anti-backlash gears

Our patented anti-backlash differentials are particularly effective at adding and subtracting shaft rotations in servo systems. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Convert rotational motion into linear motion.

In theory, a rack is an unrolled gear with an infinite pitch diameter. Gear racks are used to convert rotational motion into linear motion. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Sprockets from SDP feature corrosion resistance.

Miniature chain sprockets are designed for low-cost applications provide a high degree of position control, low backlash, good tensile strength, as well as corrosion resistance. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Plastic couplings from SI features UV resistance.

There is no windup or backlash or any derating for reversing applications. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Anti-backlash gears from SI feature Fairloc® hubs

Each gear is composed of a set of two gear halves that give the appearance of a split gear. These cost-effective gears are compact, self-contained and offer a small gear hub envelope. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Inch and metric precision internal gears from SI

The metric gears in Modules 0.5, 0.8, & 1 are ISO Class 7 and are stocked in 5, 8 & 10 mm face widths. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Posi-drive Belts and Sprockets from SI

Posi-drive belts and sprockets have excellent chemical and abrasion resistance, making them suitable for medical and food processing applications. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - 24-Volt DC anti-backlash brakes from SI

24-Volt DC anti-backlash brakes feature zero drag when de-energized . (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Fairloc® hubbed shaft reducers / extenders

High precision shaft reducers / extenders eliminate the need for special shafting. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Timing belt pulleys featuring the HTD®3 profile

Timing belt pulleys from SDP feature the aluminum HTD® 3mm profile and the Fairloc® integral hub locking system. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Fairloc® Hub Spur Gears

Patented Fairloc® Integral Fastening System from Sterling Instrument on AGMA 10, 303 stainless steel gears. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - AGMA Q10 Aluminum-Acetal Gears from SI

Aluminum-Acetal Gears from Sterling Instrument offer the best of both worlds: the noise reduction benefits of acetal rim gear teeth along with the strength of the 2024 aluminum core assembled onto a stainless steel hub. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Sterling Instrument, We do what others can't!

Sterling Instrument is committed to the high standards you expect, ensuring that your gears and gear assemblies are of the highest quality. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - ABEC 3 bearings from SDP feature low friction.

These bearings are suitable for commercial applications that require low friction movement. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Unique Synchromesh Cable Drives From SDP

Synchromesh cable can be used with lower tension when compared with ropes which reduces power consumption. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Timing Belts: Polyurethane with Fiberglass cords

These belts have fiberglass tensile cords arranged in S and Z configurations that provide even greater breaking strength than their steel counterparts, resulting in a high load carrying capacity. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Miniature Right Angle Drives From SDP

Expanded Series of Miniature Right Angle Drives From SDP Feature Maintenance Free Operation (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Fairloc® hubbed Shaft Collars From SI

Shaft Collars From Sterling Instrument feature a built-in bearing shim spacer and the Integral Fairloc® Fastener. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Timing Belts - reduce dust for clean performance.

PowerGrip® TruMotion® Timing Belts from SDP feature a polymer-free nylon tooth facing for clean running performance. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Shaft Collars With Patented Fairloc® Fastener

Shaft Collars From Sterling Instrument Featuring The Integral Fairloc® Fastener (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Timing Belts, Standard or Custom - Available Now!

SDP/SI provides (metric) standard and custom timing belts in whatever size is required. (read more)

Stock Drive Products & Sterling Instrument - SDP/SI - Timing Belts Standard or Custom, Available Now!

SDP/SI is one of the largest manufacturers and suppliers of timing belt sleeving anywhere. (read more)