Stock Drive ProductsSterling Instrument - SDPSI

Universal joints are used to transmit power, motion or both. It is a mechanical connection between intersecting shafts, which are usually not parallel. Cardan joint or Hooke joint is the most common and consists of two yokes, one on each shaft, connected by a cross-shaped intermediate member called the spider. The angle between the shafts is called the operating angle. It is usually constant during operation, but not necessarily so. Good design practice calls for low operating angles, often less than 25°. Universal joints are available in steel or in thermoplastic body members. For maximum load-carrying capacity for a given size a steel universal joint should be selected. Universal joints with thermoplastic body members are used in light industrial applications in which their self-lubricating feature, light weight, negligible backlash, corrosion resistance and capability for high-speed operation are significant advantages. Ball-jointed universals are used for high-speed operation and for carrying large torques. They are available in miniature and standard sizes. SDP pioneered the concept of combining the exceptional qualities of selected plastic materials with different metals to create products which incorporate both. “SUPER-PLAST®” designs have the following advantages: Inexpensive replacement of metal components Dampens vibration Corrosive and chemical resistant Electrically insulated

We manufacture and design high-quality gears as well as complete speed-reduction systems. For build-to-print custom parts, assemblies, design, engineering and manufacturing services contact our engineering group. Speed reducers and gear trains can be classified according to gear type as well as relative position of input and output shafts. SDPSI offers a wide variety of standard catalog items: Bu-Ord size gearheads and speed reducers NEMA size planetary and spur gearheads NEMA size right angle and dual output right angle planetary gearheads We realize you may not be interested in selecting a ready-to-use speed reducer. For those of you who wish to design your own special gear train or speed reducer we offer a broad range of precision gears, types, sizes and material, available from stock.

SDPSI offers 200 inch and metric dimensioned feed and idler rollers for multiple applications. Typical applications include: copiers, printers, money or dispensing machines, vending machines and paper transport. SDPSI feed and idler products provide excellent performance due to the urethane 60 durometer rolling surface. Outstanding features include high-load bearing and shock-absorption capacity, noise reduction, low-rolling resistance, resistant to flat development and wear. They are especially resistant against compression under static loads. The feed and idler rollers are easily installed on drive shafts via adhesive bonding, press fits on knurled shafts and set screws. Small inch and metric sized idlers are available in all stainless steel construction or as a lower cost option an idler with sintered bronze bearings in stainless steel housing.

Fairloc® is the better way to fasten rotating components. It solves phasing, timing, positioning and frequent removal problems. Easy Adjustment Fairloc® replaces set screws and clamps; components can be repositioned with a single hex key adjustment. Will not Mar Shaft Outstanding Reliability Compact, Self-Contained Design When available space or access is limited Fairloc's® small hub envelope is a distinct advantage. Full Use of the Bore Gives maximum support to the component, reduces wobble or misalignment. Superior to Other Fasteners in High-Torque Applications

Friction, or resistance to motion, is the result of the force acting between two surfaces as they slide against each other. Bearings reduce friction and provide smooth sliding contact between surfaces due to their material, shape or lubrication. Choosing the correct bearing for an application improves efficiency, extends bearing life at high speeds and avoids overheating. Bearings fall into two general categories: radial bearings that support rotating shafts and thrust bearings that support axial loads. Four classifications of bearing tolerances have been established, providing standards of precision for correct application of ball bearings. The designations are, ABEC 1, ABEC 5, ABEC 7 and ABEC 9, ABEC 9 being the most precise. SDPSI carries a wide range of bearing types and materials suitable for industrial and commercial applications. Self-lubricating plastic bearings are light weight and work well in applications where abrasive and corrosive conditions exist. Both plain bearings (sleeve bearings and thrust bearings) and anti-friction bearings (ball bearings, roller bearings, and needle bearings) are offered. Standard catalog items include: precision ball bearings, plastic race ball bearings, self-clinching & self-aligning pressbearings, needle roller bearings, linear bearings, thrust bearings, plain and flanged sleeve bearings, sintered bearings, rod ends and much more. Our bearing products combined with our mechatronic design, engineering and manufacturing services will make your job easier and your product a success.

Sterling Instrument is a well-known manufacturer of high precision standard and custom gears for a wide range of applications. Our fine to medium pitch gears are manufactured for some of the most demanding customers in the aerospace, defense, and medical industries of today. Sterling Instrument applies strict quality control throughout the entire manufacturing cycle. Comprehensive engineering experience enables us to offer the additional services of design review and or value engineering toward the goal of manufacturing efficiency. An on-site Class 10000 clean room is used for testing, assembly and packaging. NADCAP and customer approved facilities are used for casting, heat-treating, plating, and painting. We can machine in many materials including aluminum, brass, bronze, steel alloys, stainless steel and titanium.