The HEIM® BEARINGS company has been acquired by RBC® BEARINGS, a leader in the world of highly engineered bearing products. 

HEIM® BEARINGS produces the industry's widest range of rod end bearing sizes (aka rod ends) in  the following four grades (types): precision, aircraft, military and commercial with each grade including different series suitable for respective application requirements. HEIM® BEARINGS are made from different materials featuring among others high strength two piece designs, high capacity designs, self-lubricating options and thermoplastic races or Teflon® liners. Please consult the supplied table on different grades and series offered.

- Precision rod ends are manufactured to tight tolerances for applications requiring improved linkage accuracy and reduced looseness. 

- Aircraft rod ends use premium materials, and have magnafluxed rod end bodies. Originally intended for aircraft applications, aircraft rod ends are used in many industrial applications where a high degree of reliability is required

- Military rod ends are produced in strict accordance with all applicable military specifications and are typically used in military and commercial aviation applications, or when Mil-Spec approval is required

- Commercial rod ends are produced using standard materials and manufacturing methods, and consist an economical choice for industrial applications

The HEIM® BEARINGS ME/AS81935/1 and FE/AS81935/2 series are military standard, high capacity self lubricating rod ends, male and female threaded respecively, using HEIM® UNIFLON® liner approved to SAE-AS81820 (formerly MIL-B-81820). Their rod end bodies are made from 4340 alloy steel, heat treated, magnetic particle inspected, cadmium plated and chromate treated. Balls  are made from 440C on 17-4PH race inserts and heat treated.

Letters “L” and “K” to prefix indicate Left Hand thread and Keyway respectively.

Please refer to the supplied chart for technical specifications and the RBC® HEIM® Bearings Catalog for additional information.

Bellcrank bearings are commonly used for various control bellcranks throughout many experimental aircraft. They are prepacked with lubricant conforming to Mil. -G23827, inspected per Mil. I 45208A and 100% traceable. Operating temperature range -30 Deg. F to +250 Deg. F

Low cost Chinese origin bearings for industrial applications from various manufacturers.  Marketed and sold by UXCELL Factory-Direct e-Commerce platform and other resellers.

The HEIM® BEARINGS company has been acquired by RBC® BEARINGS, a leader in the world of highly engineered bearing products. 

HEIM® BEARINGS produces the industry's widest range of rod end bearing sizes (aka rod ends) in the following four grades (types): precision, aircraft, military and commercial with each grade including different series suitable for respective application requirements. HEIM® BEARINGS are made from different materials featuring among others high strength two piece designs, high capacity designs, self-lubricating options and thermoplastic races or Teflon® liners. Please consult the supplied table on different grades and series offered.

- Precision rod ends are manufactured to tight tolerances for applications requiring improved linkage accuracy and reduced looseness. 

- Aircraft rod ends use premium materials, and have magnafluxed rod end bodies. Originally intended for aircraft applications, aircraft rod ends are used in many industrial applications where a high degree of reliability is required

- Military rod ends are produced in strict accordance with all applicable military specifications and are typically used in military and commercial aviation applications, or when Mil-Spec approval is required

- Commercial rod ends are produced using standard materials and manufacturing methods, and consist an economical choice for industrial applications

The HEIM® BEARINGS HM M/HF M Series aircraft rod ends, male and female threaded respecively,have rod end bodies made from aircraft quality carbon steel and magnafluxed for a high degree of assurance of rod end integrity. Balls  are made from 52100 alloy steel, heat treated and chrome plated on brass race inserts. These series were originally intended for general aviation applications and is also used in many industrial applications where rod end reliability is critical.

Letter “L” in the prefix indicates Left Hand thread

Please refer to the supplied chart for technical specifications and the RBC® HEIM® Bearings Catalog for additional information.

RBC Aerospace Bearings offers the industry’s widest selection of rod end type bearings (also known as the Heim rod ends or joints) in inch and metric sizes with a variety of platings, coatings and materials and a range of optional features such as lubrication fittings, left hand threads and keyway slots. RBC product range of Heim rod ends are offered with brass race inserts in standard, precision and high capacity designs, high strength two piece designs, self-lubricating rod ends with engineered thermoplastic races or high performance Teflon® liners, military standard (AS81935) ME/FE rod end series, ball bearing rod ends with extremely low friction and misalignment capability and elastomeric bearing rod ends that reduce vibration and noise in installations. Please refer to the attached documentation for additional information.

M81935/1 ME Series Product Features:

Wide, High Capacity Series

External Threads

Alloy Steel, Self-Lubricated

AS8976 narrow spherical bearings from RBC Aerospace Bearings are available in grooved or chamfered versions from steel (MS21154S grooved & MS21155S chamfered steel series) or bronze (MS21154B grooved & MS21155B chamfered bronze series). For additional information please refer to the attached documentation.

AS8976 Bearing Product Features:

• Qualified to AS8976 (formerly MIL-B-8976)

• Narrow series, metal-to-metal

• Material MS21154S & MS21155S steel series 03-503 and 03-505

Outer ring: Alloy steel, AMS-S-5000, AMS-S-6758 or AMS-S-6050

Inner ring: CRES 440C, HRC 55 min. AMS 5630

• Material MS21154B & MS21155B bronze series 03-523 and 03-525

Outer ring: Aluminum bronze

Inner ring: CRES 440C, HRC 55 min. AMS 5630

In 1971 AURORA BEARING COMPANY entered the rod end and spherical bearing market and soon became a major force in the rod end industry. The AURORA BEARING product potfolio today includes both Aerospace / Military and Commercial / Industrial rod ends and standard spherical bearings in inch and metric systems while special bearings can be designed and manufactured on request. Different series of these bearings are separately presented together with respective documentation.

AURORA BEARING MM & MB Series include Precision General Purpose Male Rod Ends with the following features. Rod ends in these series are equivalent to RBC® HEIM® BEARINGS part numbers shown in the parenthesis.

Body - Low carbon steel, protective coated for corrosion resistance. Size 16 standard series body is alloy steel not heat treated.

Ball - Alloy steel, heat treated, hard chrome plated.

Race - Low carbon steel, protective coated for corrosion resistance.

Grease Fitting -  supplied without grease fittings. When a grease fitting is required, specify by adding suffix "Z" or "F". Ex.: MM-6Z = Zerk Type Fitting MM-6F = Flush Type Fitting.

Load ratings apply only to rod ends without grease fittings.

PTFE Liners available upon request. Specify by adding suffix "T". Ex.: MM-6T.

TIMKEN® lock nuts and respective lock washers are used in the mounting of straight bore bearings on shafts. They are available for bearings in the various series. Their dimensions relate to the bearing bore sizes.

INA, LuK, and FAG brands of bearings are part of Schaeffler Group portfolio, a worldwide leading manufacturer of bearings and other precision products for automotive, motion control and applications for aviation and aerospace.

INA Bearing Company is dedicated on the production of extraordinary quality roller bearings, plain bearings and linear components.

INA Thrust Bearings include an extensive range of Ball Thrust, Roller Thrust, Double Direction Thrust and Self Aligning Thrust Bearings available in a wide collection of ISO, DIN and popular inch and metric series. Races are made from through hardening and case hardening steels. Cage materials include phenolic, steel, plastic, aluminum and bronze. Selective sizes of INA Ball Thrust Bearings are available from stainless steel.

INA Ball Thrust Bearings are offered as banded, 3 piece grooved race, 3 piece flat race and self aligning series.

INA Roller Thrust Bearings are available as complete bearings or cage and roller assemblies and washer components.

INA Double Direction Thrust Bearings are available as complete bearings in ball series or component groups of cage and roller assemblies and ZS washers.

INA Self Aligning Thrust Bearings are available as complete bearings with the self aligning seats sold separately.

KAMAN CORPORATION bearings include a wide range of spherical bearings, rod ends and journal bearings. 

KAMAN KAMATICS Metal-To-Metal Self-Lubricating Spherical Bearings are designed with conventional stainless steel alloys, or other specialized alloys based on application, temperature and environment and come with KAron™ self-lubricating liners. They  are maintenance free and provide increased reliability and longer application life, reducing operating cost in challenging applications across industries.  They are offered in different series outlined below, in inch and metric systems and used in a a variety of applications in  aerospace (commercial fixed wing aircrafts), engines,commercial and military helicopters, heavy industry, hydropower, or marine vehicles.

KR-CN Series. MS14104 qualified bearings, narrow, chamfered outer race, -65° F to +325° F

KR-CNG Series. MS14101 qualified bearings, narrow, grooved outer race, -65° F to +325° F

KR-CW Series. MS14102 qualified bearings, wide, chamfered outer race, -65° F to +325° F

KR-CWG Series. MS14103 qualified bearings, wide, grooved outer race, -65° F to +325° F

KR-CN/4 Series. MS81820/4 qualified bearings, lined bore, narrow, chamfered outer race, -65° F to +325° F

KR-CNG/1 Series. MS81820/1  qualified bearings, lined bore, narrow,  grooved outer race, -65° F to +325° F

KR-CW/2 Series. MS81820/2 qualified bearings, lined bore, wide, chamfered outer race, -65° F to +325° F

KR-CWG/3 Series. MS81820/3 qualified bearings, lined bore, wide, grooved outer race, -65° F to +325° F

KR-CE Series. Extended inner race bearings, high misalignment, chamfered outer race

KR-CEG Series. Extended inner race bearings, high misalignment, grooved outer race

KR-C Series. Miniature Series bearings, chamfered outer race

For additional information and specifications please refer to the supplied documentation.

The MS27643/AS27643 series airframe control bearings are offered by various manufacturers. They are  double row, ball, self-aligning, heavy duty bearings produced in accordance with AS7949 specification.

Depending on the manufacturer, rings and balls of these bearings are produced from premium quality AISI 52100 chrome steel or CRES 440C materials.  External surfaces (except bore, caps, and seals) are cadmium plated per AMS-QQ-P-416 or zinc nickel plated per OEM specifications. They include PTFE seals, CRES sealcaps and they are prelubricated. They are offered in different sizes but custom sizes, materials, tolerances, radial internal clearances, lubrication, plating, etc., can also be offered upon request.

Operating temperature range: -65 to +250 °F.

The BARDEN Corporation, part of SCHAEFFLER Group, is a world leader in the design and manufacture of super precision ball bearings. 

The BARDEN product line is comprised largely of radial, single and double row, angular contact (separable and non-separable) and deep groove, super precision ball bearings. All products in the range can meet and will usually exceed ABEC 9 (ISO P2) standards. Product offering also includes large and small diameter thin section ball bearings. Produced in standard cross sections and configurations, these bearings can be customised to meet the unique needs of each application.

BARDEN super precision bearings come in inch or metric dimensions with diameters ranging from 4mm (5/32") OD up to 300mm (11½") OD. A variety of seals, shields and metallic/non-metallic cage designs are available to meet most requirements.

Many BARDEN bearings operate comfortably at speeds reaching 2 million dN (bore in mm x RPM), or above. 

The BARDEN deep groove ball bearings have full shoulders on both sides of the raceways of the inner and outer rings. They can accept radial loads, thrust loads in either direction, or a combination of loads. Available in many sizes,with a variety of cage types.

The BARDEN range of angular contact ball bearings are ideally suited for high speed applications where both axial and radial loads are to be supported, and system rigidity requires preloading. They have a nominal contact angle ranging from 10° to 25°and are available with machined phenolic cages and with separable (B type) or non-separable (H type) outer ring. The H type non-separable bearings (offered in 1900HC, 100HC, 200HC and 300H series)  use a larger complement of balls than is possible in the same size deep groove bearings resulting in a greater capacity and higher speeds because of the phenolic one-piece cage. The B type separable angular bearings utilize cages to retain the balls when the outer ring assembly (including cage and balls) is separated from the inner ring. This type of bearing has the same high speed capability as the H type bearing providing advantages for certain applications. Separable bearings simplify assembly of units where bearings are located in blind holes. The separable feature also permits dynamic balancing of a rotating component with inner rings mounted in place, apart from the outer ring and housing.

For additional information please refer to the supplied documentation or contact us.

The RBC® BEARINGS offers a full line of airframe control ball bearings to the aerospace industry  in both “Standard” and “Precision” series. The prefix “M” in a bearing number indicates that it is of a precision series. Although designed and manufactured under demanding quality control requirements for airborne systems, these bearings have been successfully used in many industrial applications, where oscillatory movement, high loads, or corrosive environments are prevalent.

RBC® BEARINGS airframe control ball bearings conform to SAE-AS7949 (formerly MIL-B-7949) and many major OEM specifications. These bearings are of lightweight design, corrosion-resistant, grease-lubricated, and typically sealed. Airframe control bearing rings and balls are made of hardened bearing alloy, AISI 52100, with all exposed surfaces, except bearing bore, caps and seals, plated for corrosion protection. For improved corrosion protection, RBC® BEARINGS  supplies bearings made of hardened stainless steel alloy, AISI 440C. This alloy may be passivated or plated with cadmium or zinc nickel for enhanced corrosion protection.

The RBC® BEARINGS Airframe Control Ball Bearings are offered in different series. The KP/KP-A and KSP/KSP-A series, presented separately, are briefly discussed below.

KP (Heavy Duty) and KP-A (Medium Duty) SAE-AS7949 Series radial ball bearings  manufactured with Plyoseals. KP heavy duty single row sealed bearings comply with MS27640 specifications while KP-A medium duty single row ball deep groove sealed bearings with MS27641 specifications. Both KP and KP-A radial ball bearings are prelubricated for life and feature PTFE seals and CRES sealcaps, cadmium plated exposed surfaces except bore, caps, and seals. Both are also offered with CRES 440C material and/or zinc nickel plating per OEM specifications. Load limit ratings: Radial 1230-lbs, thrust 300-lbs.

KSP/KSP-A Series SAE-AS7949 Series single/double row, self-aligning, light and heavy duty ball bearings with bonded PTFE seals and cadmium plated exposed surfaces except bore, caps, and seals. Like those of KP/KP-A Series, both KSP and KSP-A bearings are prelubricated for life and are also offered with CRES 440C material and/or zinc nickel plating per OEM specifications.

For additional information please refer to the supplied documentation in the respective product presentations.

The RBC® BEARINGS offers a full line of airframe control ball bearings to the aerospace industry  in both “Standard” and “Precision” series. The prefix “M” in a bearing number indicates that it is of a precision series. Although designed and manufactured under demanding quality control requirements for airborne systems, these bearings have been successfully used in many industrial applications, where oscillatory movement, high loads, or corrosive environments are prevalent.

RBC® BEARINGS airframe control ball bearings conform to SAE-AS7949 (formerly MIL-B-7949) and many major OEM specifications. These bearings are of lightweight design, corrosion-resistant, grease-lubricated, and typically sealed. Airframe control bearing rings and balls are made of hardened bearing alloy, AISI 52100, with all exposed surfaces, except bearing bore, caps and seals, plated for corrosion protection. For improved corrosion protection, RBC® BEARINGS  supplies bearings made of hardened stainless steel alloy, AISI 440C. This alloy may be passivated or plated with cadmium or zinc nickel for enhanced corrosion protection.

The RBC® BEARINGS Airframe Control Ball Bearings are offered in different series. The KP/KP-A and KSP/KSP-A series, presented separately, are briefly discussed below.

KP (Heavy Duty) and KP-A (Medium Duty) SAE-AS7949 Series radial ball bearings  manufactured with Plyoseals. KP heavy duty single row sealed bearings comply with MS27640 specifications while KP-A medium duty single row ball deep groove sealed bearings with MS27641 specifications. Both KP and KP-A radial ball bearings are prelubricated for life and feature PTFE seals and CRES sealcaps, cadmium plated exposed surfaces except bore, caps, and seals. Both are also offered with CRES 440C material and/or zinc nickel plating per OEM specifications. Load limit ratings: Radial 1230-lbs, thrust 300-lbs.

KSP/KSP-A Series SAE-AS7949 Series single/double row, self-aligning, light and heavy duty ball bearings with bonded PTFE seals and cadmium plated exposed surfaces except bore, caps, and seals. Like those of KP/KP-A Series, both KSP and KSP-A bearings are prelubricated for life and are also offered with CRES 440C material and/or zinc nickel plating per OEM specifications.

For additional information please refer to the supplied documentation in the respective product presentations.

RBC SAE-AS7949 MS27646 B500DD Series Airframe Control Extra Light Torque Tube Ball Bearings are single row, self-aligning, extra light duty ball bearings with PTFE seals and cadmium plated exposed surfaces except bore, caps, and seals. This series is dimensionally interchangeable with the unsealed B500 series. MS27646 B500DD Series bearings are prelubricated for life and are also offered with CRES 440C material and/or zinc nickel plating per OEM specifications. Please refer to the attached reference chart.

TIMKEN® tapered roller bearings are characterized by reliability, versatility and choice. They stand up to extreme situations, including high-corrosive, high-temperature, vacuum or low-lubrication environments. Uniquely designed to manage both types of loads on rotating shafts and in housings and offer a choice of nearly 26,000 product combinations, from single, double to four-row configurations and thrust bearings. Each bearing contains four interdependent components: the cone (inner ring), the cup (outer ring), the tapered rollers (rolling elements) and the cage (roller retainer). Tapered angles allow bearings to efficiently control a combination of radial and thrust loads. The steeper the outer ring angle, the greater ability the bearing has to handle thrust loads. To provide a true rolling motion of the rollers on the raceways, the extensions of the raceways and the tapered surfaces of the rollers come together at a common point, the apex, on the axis of rotation.

TIMKEN® Single Row (TS) bearings are basic and most widely used. Usually fitted as one of an opposing pair. They can be “set” to the required clearance (endplay) or preload condition to optimize performance. TSF type bearings, a TS variation, have a flanged outer ring to facilitate axial location and accurately aligned seats in a through-bored housing.

TIMKEN® Double Row Outer Ring bearings (TDO)  have a one-piece (double) outer ring and two single inner rings. Usually supplied complete with an inner-ring spacer as a pre-set assembly. They offer a wide effective bearing spread and frequently chosen for applications where overturning moments are a significant load component. Other bearing types include TDI (double-row double inner race) and TDIT (same as TDI with tapered bore). Both comprise a double inner ring and two single outer rings. Usually supplied complete with an outerring spacer as a pre-set assembly. TDI and TDIT bearings can be used at fixed (locating) positions on rotating shaft applications. Offered types include: TNA (double-row non-adjustable), TNASW (same as TNA with lubricant slots) or TNASWE  (same as TNSW with extended back face rib). They are similar to the TDO with a one-piece (double) outer ring and two single inner rings.  Supplied with a built-in clearance to give a standard setting range, these bearings provide a solution for many fixed or floating bearing applications where optimum simplicity of assembly is required.

For aerospace applications, different FAA PMA approved tapered single roller bearings are offered including TIMKEN® 13600, 13800 and LM813000 Series with a cone assembly and a cup. Offered in "inch" and "metric" versions LM813000 Series feature  minimization of friction between the rotating parts, handling of thrust loads, even load distibution across the roller, heavy load carrying capacity & stamped steel cage.

For additional information please refer to the supplied documentation.

The HEIM® BEARINGS company has been acquired by RBC® BEARINGS, a leader in the world of highly engineered bearing products. 

HEIM® BEARINGS produces the industry's widest range of rod end bearing sizes (aka rod ends) in  the following four grades (types): precision, aircraft, military and commercial with each grade including different series suitable for respective application requirements. HEIM® BEARINGS are made from different materials featuring among others high strength two piece designs, high capacity designs, self-lubricating options and thermoplastic races or Teflon® liners. Please consult the supplied table on different grades and series offered.

- Precision rod ends are manufactured to tight tolerances for applications requiring improved linkage accuracy and reduced looseness. 

- Aircraft rod ends use premium materials, and have magnafluxed rod end bodies. Originally intended for aircraft applications, aircraft rod ends are used in many industrial applications where a high degree of reliability is required

- Military rod ends are produced in strict accordance with all applicable military specifications and are typically used in military and commercial aviation applications, or when Mil-Spec approval is required

- Commercial rod ends are produced using standard materials and manufacturing methods, and consist an economical choice for industrial applications

The HEIM® BEARINGS M M & F M  series are Precision Special Purpose Aircraft rod ends male and female threaded respectively. Their outer members are manufactured from carbon Steel, magnetic particle inspected, with protective coating for corrosion resistance, the balls from 52100 Alloy steel, heat treated, chrome plated and inserts from brass. The letter “L” to prefix indicates Left Hand thread.

Please refer to the supplied chart for technical specifications and the RBC® HEIM® Bearings Catalog for additional information.

In 1971 AURORA BEARING COMPANY entered the rod end and spherical bearing market and soon became a major force in the rod end industry. The AURORA BEARING product potfolio today includes both Aerospace / Military and Commercial / Industrial rod ends and standard spherical bearings in inch and metric systems while special bearings can be designed and manufactured on request. Different series of these bearings are separately presented together with respective documentation.

AURORA BEARING MW & MG Series include Precision General Purpose Female Rod Ends with the following features. Rod ends in these series are equivalent to RBC® HEIM® BEARINGS part numbers shown in the parenthesis.

Body - Low carbon steel, protective coated for corrosion resistance. Size 16 standard series body is alloy steel not heat treated.

Ball - Alloy steel, heat treated, hard chrome plated.

Race - Low carbon steel, protective coated for corrosion resistance.

Left-hand threaded units have an identification groove near end of shank.

Grease Fitting available for sizes -3 and up. Units are supplied without grease fittings. When a grease fitting is required, specify by adding suffix "Z" or "F". Ex.: MW-6Z = Zerk Type Fitting MW-6F = Flush Type Fitting.

Load ratings apply only to rod ends without grease fittings.

Studded configuration available upon request. Specify by adding suffix "S". Ex.: MW-8S.

PTFE Liners available upon request. Specify by adding suffix "T". Ex.: MW-8T.

RBC NICE 5000 Series bearings are similar in construction to those of 400 Series except that they have a flange on the outer ring to locate the bearing when pressed into a tube or housing, thus eliminating the need for an external mounting device. Designed for moderate loads and speeds (not exceeding 1200 rpm) where running accuracy and noise level requirements do not warrant the more expensive precision ground bearings. They feature a full ball complement without a retainer. The rings are case hardened and the soft steel band on the outer ring of the unitized assembly allows the bearing to be pressed into a housing without the necessity of close housing tolerances. The bearings are supplied pre-greased as a standard. 

NICE 5000 Series Specifications (See chart )