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 the correct application of ball bearings.
The designations are:
ABEC 1, ABEC 5, ABEC 7 and ABEC 9, ABEC 9 being the most precise.
SDP/SI 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 design, engineering, and manufacturing services will make your job easier and your product a success.
COMMERCIAL GROUND METAL BALLS:
COMMERCIAL PLASTIC BALLS:
COMMERCIAL AND PRECISION BALL BEARINGS:
Materials: Stainless Steel, Acetal, Steel
Bore: 0.04 in. (1mm) - 1.00 in. (25mm)
Outer Diameter: .125 in. (3mm) - 2.000 in. (52mm)
Width: 0.0469 in. (1mm) - 0.5000 in. (15mm)
Ball Bearings are made of hardened rolling elements and races, a separator is used to space the rolling elements and reduce friction. This shielded or sealed bearing is widely used in. instruments and machines to minimize frictions and power loss. The deep groove ball bearing is the most versatile with sealed grease lubrication. Radial loads and thrust-load capacities may be approximately equal in. this bearing. With the proper separator it is very good for high-speed operation. A separator of steel ribbon is used for intermediate speeds and at low speeds, no bearing separator is needed. Because of the simple design and the elimination of a separate lubrication system, these bearings can be found in. numerous applications.
COMMERCIAL FLANGE MOUNTED BEARINGS:
Materials: Stainless Steel, Acetal, Steel
Bore: 0.1875 in. (5mm) - .7510 in. (20.03mm)
Width: 0.38 in. (9.5mm) - 1.63 in. (41.5mm)
Our flange mounted bearings are easily mounted to secure the bearing in. position for dependable operation. A variety of mounting configurations, materials and bearing types are offered.
COMMERCIAL & PRECISION BEARING HOUSING - BEARING & BEARING MOUNTING PLATE:
Bore: 0.375 in. - 1.580 in.
Width: 0.1875 in. - 0.3750 in.
Precision bearing housings are made of chromic anodized aluminum and are offered with single or double hub. The sintered aluminum pillow block housing is suitable for additional machining and can be used for a wide range of products.
COMMERCIAL & PRECISION LINEAR BEARINGS:
Materials: Steel, Duracon®, Resin, Aluminum, Frelon®, Polymer
Bore: 13/16 in. (3mm) - 2 in. (60mm)
Outer Diameter: 15/16 in. (7mm) - 3 in. (90mm)
Length: 0.25 in. (10mm) - 4.00 in. (125mm)
Inch and metric Linear Bearings are offered in. a variety of materials, closed, open and adjustable types. Standard catalog items include both precision and commercial quality and provide long travel life, quiet movement, high-load capacity, high-position accuracy and low friction coefficient. Some styles are vibration dampening and are maintenance-free.
COMMERCIAL & PRECISION NEEDLE ROLLER BEARINGS:
Bore: 1/8 in. (3mm) - 1 in. (25mm)
Outer Diameter: 0.25 in. (6.5mm) - 1.25 in. (32mm)
Width: 0.25 in. (6mm) - 1.00 in. (16mm)
Inch and metric Needle Roller Bearings are offered in. a variety of materials and styles. Low profile, lightweight caged needle roller bearings provide up to 3 times the speed of uncaged designs and are available with 9 different bore sizes. Also available are self-aligning needle roller pressbearings and flange-mounted needle roller bearings.
COMMERCIAL & PRECISION PILLOW BLOCK BEARINGS:
Materials: Aluminum, Stainless Steel, Bronze, Thermoplastic, Zinc, Nylon
Bore: 0.125 in. (4mm) - 1.250 in. (30mm)
Length: 1.188 in. (11mm) - 5.000 in. (139mm)
Width: 0.2 in. (5mm) - 4.0 in. (87mm)
We offer a wide selection of inch and metric Pillow Block Mounted Bearings in. various materials. Types available include miniature pillow block mounted ball bearings, lightweight thermoplastic pillow block bearings and FDA compliant wash down pillow block bearings.
COMMERCIAL & PRECISION PRESS-FIT BEARINGS:
Materials: Bronze, Acetal, Stainless Steel, Steel
Bore: 1/8 in. (4mm) - 3/4 in. (35mm)
Outer Diameter: 9/32 in. (8mm) - 2 in. (42mm)
SDP/SI stocks a broad selection of self-aligning and non-aligning pressbearings. For simple quick installation choose a self-clinching pressbearing with either a PTFE-impregnated porous bronze bearing or acetal with PTFE added bearing.
PRECISION ROD END BEARINGS:
Materials: Thermoplastic, L280® Polymer
Bore: 0.25 in. (3mm) - 1.00 in. (25mm)
Outer Diameter: 0.75 in. (13mm) - 2.75 in. (60mm)
Width: 0.365 in. (6mm) - 1.375 in. (31mm)
Inch and metric plastic Rod Ends are offered by SDP/SI. These rod ends are maintenance-free, self-lubricating, lightweight and able to compensate for alignment errors and edge loads. Standard catalog items include male or female style with right- or left-hand thread.
COMMERCIAL SINTERED BRONZE BARS:
Bore: 0.5 in. - 2.0 in.
Outer Diameter: 0.25 in. - 6.00 in.
Length: 1.0 in. - 6.5 in.
Sintered solid bar stock, made from self-lubricating, oil-impregnated bronze. O.D.'s range from 1/4" to 6" and the lengths up to 6 1/2". All bars are supplied oversized so they can be machine finished to dimensions shown in our catalog.
COMMERCIAL AND PRECISION SLEEVE BEARINGS:
Materials: Aluminum, Bronze, Polyester, Acetal, Polymer
Bore: 0.0627 in. (1mm) - 4.0035 in. (25mm)
Outer Diameter: 3/16 in. (3mm) - 4.504 in. (27.4mm)
Length: 1/4 in. (3mm) - 1 in. (25mm)
Inch and metric Sleeve Bearings, plain or flanged, are offered in. a variety of materials and sizes. Many of our sleeve bearings are made of special polymers that are maintenance-free, provide high-wear resistance, dry-running, chemical resistant, and can withstand high temperatures.
COMMERCIAL SPHERICAL BEARINGS:
Bore: 5 mm - 12 mm
Outer Diameter: 12.5 mm - 24 mm
Width: 10 mm - 16 mm
Self-lubricating, oil-impregnated bronze Spherical Bearings are available with bores 5 mm to 12 mm. Felt washers and spring steel retainers are offered for use with the spherical bearings.
PRECISION SPHERICAL BEARINGS:
Materials: Igumid G, Polymer
Bore: 0.19 in. (2mm) - 0.50 in. (12mm)
Outer Diameter: 0.5625 in. (8mm) - 1.0625 in. (26mm)
Width: 0.312 in. (4mm) - 0.625 in. (16mm)
Injection molded from high-performance plastics, these bearings are used in. various
applications where lubricated metal bearings are not suitable. They are lightweight, vibration dampening and provide excellent performance in. water, chemicals, and dusty environments.
COMMERCIAL & PRECISION THRUST BEARINGS:
Materials: Steel, Stainless Steel, Nylon, Polymer
Bore: 1/8 in. (4mm) - 1 1/2 in. (28mm)
Outer Diameter: 0.4375 in. (9mm) - 2.6 in. (44mm)
Thrust Bearings are offered in. a variety of configurations, materials and sizes. Both inch and metric dimensioned thrust bearings are available as standard catalog items. General purpose polymer, high-temperature polymer and industrial grade polymer thrust washers are also offered.
Our sister division, QBC, offers monitoring and maintenance tools for power transmission components.Attain Fast and Accurate Pulley Alignment
Get tools that are easy to use:
Fast and accurate readings
Easy one-person operation
Displays parallel and angular misalignment
Both horizontal and vertical mounted machines
Safely Mount Bearings in. the Workshop or On Site
Use safe, environmentally friendly and energy efficient tools to mount bearings and other drive components:
Portable Handheld Induction Heaters
Portable Table-Top Induction Heaters
Impact Fitting Tools to avoid unnecessary damage and premature failure
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