REXNORD guide
What Rexnord manufactures and what sets it apart
Rexnord is a global brand of power transmission components, known for its mounted bearings, pillow blocks and friction bushings. Its products are designed to withstand radial and axial loads in industrial equipment, with a special focus on robustness and ease of assembly.
In the bearings category, Rexnord stands out for its spherical roller bearings and its insert bearings (Y-type), which are combined with pillow blocks or flanged housings to form units ready to install. It also manufactures filament-wound friction bushings, such as those in the Duralon line, which offer a self-lubricating alternative for rotating or oscillating shafts.
The brand is widely used in industries such as food, cement, mining, paper and material handling, where operating conditions demand reliable, long-life components.
Rexnord lines carried by MR
At MR Accesorios Industriales we work with three main Rexnord categories: bearing housings, bearings and bushings and sleeves. Within each category, we offer the subcategories most in demand by Argentine industry.
Below is the detail of the lines:
Bearing housings
Includes housings for bearings (series ZAS, ZA, ZEP, ZEPS, ZCS, ZMC, ZEF, ZT, ZB) and Y-housings with insert bearing (series P). They are complete units that house the bearing and are fixed to the structure, ideal for conveyors, elevators and process equipment.
Bearings
Comprises spherical rollers (series 2000U, ZBR, ZN5000) and Y-bearings (inserts) (series 3000). Spherical rollers withstand misalignment and high loads; inserts are mounted in housings and allow self-alignment.
Bushings and sleeves
Includes filament-wound friction bushings, such as those in the Duralon series and those identified with numeric codes (701-...). They are used as self-lubricating bearings in applications with limited space or difficult maintenance.
Main Rexnord series
Rexnord organizes its products into series that identify the type of component and its size range. Knowing the series helps you quickly locate the correct replacement.
Series ZAS
Rexnord housings for mounted bearings, frequently used in conveyors and process equipment. Examples: ZAS2311, ZAS2315.
Series ZA
Rexnord housings from the same line as the ZAS series, with its own size designation. Examples: ZA2311, ZA2315.
Series ZEP
Rexnord housings for mounted bearings, with its own size designation. Examples: ZEP2102, ZEP2103.
Series ZEPS
Rexnord series related to ZEP, with its own designation. Examples: ZEPS2107, ZEPS2111.
Series ZCS
Rexnord housings for bearings, with size designation by code. Examples: ZCS2107, ZCS2108.
Series ZMC
Rexnord housings for mounted bearings. Examples: ZMC2012, ZMC2015.
Series ZEF
Rexnord housings for mounted bearings. Examples: ZEF2107, ZEF2108.
Series P
Y-housings with insert bearing: complete units to mount on the shaft and fix to the structure. Examples: P2B-107-T, P2B-111-T.
Series ZT
Rexnord housings for bearings, with its own size designation. Examples: ZT43107, ZT46107.
Series ZB
Rexnord housings for bearings, with its own size designation. Examples: ZB2303, ZB2307.
How to read a Rexnord code
Rexnord codes combine letters and numbers that indicate the series, size and characteristics of the component. Below are real catalog examples with their interpretation.
Spherical roller bearing: 2303U
The base number 2303 identifies the spherical roller bearing and its size; the last digits relate to the shaft diameter in inches. The suffix U is part of the Rexnord designation, so it is best to always get a quote with the complete code.
Insert bearing: 3107U
The number 3107 corresponds to the 3000 series of inserts, with a specific shaft diameter; the U is part of the Rexnord designation of the insert.
Pillow block: ZAS2311
The letters ZAS identify the housing series; the number 2311 defines the size, related to the shaft diameter.
Y-housing with insert: P2B-107-T
The letter P indicates pillow block; the block 107 defines the shaft size and the suffix T is a variant of the unit. Get a quote with the complete code.
Friction bushing: 701-60040-160
The first block (701) identifies the line; the following blocks indicate dimensions (diameter and length) and mounting variants.
Frequent Rexnord prefixes and suffixes
Rexnord uses a series of letters and numbers that recur in its designations. Knowing them helps interpret the codes and order the correct replacement.
U
Suffix present in the designations of Rexnord spherical rollers and inserts, such as 2303U and 3107U. It is part of the code and is quoted along with it.
ZAS, ZA, ZEP, ZEPS, ZCS, ZMC, ZEF, ZT, ZB
Prefixes that designate the different Rexnord housing series. Each series has its own mounting characteristics and capacity.
P
Prefix for Y-housings with insert bearing, in codes such as P2B-107-T.
BRN
Block that appears in the metric codes of Y-housings with insert bearing, such as P2BRN042035MMZ. To confirm the insert and shaft size, get a quote with the complete code.
MMZ
Suffix that appears at the end of some metric Y-housing codes, such as P2BRN042035MMZ. It is part of the complete designation.
Duralon
Trade name of a line of self-lubricating friction bushings, resistant to corrosion and weathering.
Applications by industry in Argentina
Rexnord products are used in a wide variety of industries in Argentina. Below are the main sectors and the most common components.
Metallurgy
In conveyors, fans and transfer tables, housings and spherical rollers are used to withstand high loads and misalignment.
Agriculture
In augers, elevators and grain processing equipment, insert bearings and Y-housings are used, which resist dust and vibration.
Marine
In conveyors, fans and auxiliary deck and engine room equipment, spherical roller bearings and robust housings are used, suitable for humid environments.
Oil and gas
In pumps, compressors and conveyors, high-capacity bearings and housings are required, with effective sealing against contaminants.
Food
In conveyors, mixers and packaging lines, housings with seals suitable for washdown are used, along with self-lubricating friction bushings that prevent lubricant contamination.
Mining
In conveyor belts, screens and fans, spherical rollers and large housings are used, suitable for high loads and abrasive environments.
Paper
In conveyors, fans and transmission systems of paper plants, spherical roller bearings and pillow blocks are used, which facilitate assembly and maintenance.
Cement
In fans, conveyors and elevators, high-capacity bearings and housings are installed, resistant to dust.
Energy
In fans, pumps and material handling systems of generation plants, reliable bearings and housings are required for continuous operation.
Automotive
In assembly lines and testing equipment, insert bearings and compact housings are used to guide shafts and rollers.
Plastics
In conveyors, mixers and recycling equipment, spherical roller bearings and housings are used that withstand combined loads and moderate temperatures.
Cold storage
In conveyors and refrigeration equipment, housings and bearings with special seals are used to withstand washdowns and humidity.
Sugar
In cane conveyors, elevators and fans, robust bearings and housings are installed, suitable for heavy loads and corrosive environments.
How to choose the right Rexnord
Selecting the right Rexnord component requires evaluating the operating conditions. The main criteria are:
Load
Determine the magnitude and direction of the loads (radial, axial or combined). For high radial loads with misalignment, choose spherical rollers; for moderate loads with self-alignment, choose Y-inserts.
Speed
Check the shaft rotation speed. Each type of bearing has its own speed limit, which depends on size and sealing. Consult the manufacturer's limits.
Sealing
If the environment has dust, humidity or washdowns, choose variants with reinforced or double seals, according to the complete code. For food applications, consider corrosion-resistant materials.
Internal clearance
Internal clearance (C3, C4) affects the ability to absorb thermal expansion. In applications with high temperatures or impact loads, greater clearance may be required.
Mounting
Define the type of fixing: pillow block, cartridge or Y. Check the housing and shaft dimensions to ensure compatibility.
Environment
Consider temperature, presence of water, chemicals or abrasive particles. For corrosive environments, filament-wound friction bushings or housings with the appropriate sealing may be the right option.
Equivalents and interchangeability
Many Rexnord codes have equivalents in other brands, especially in spherical roller bearings and standard housings. However, not all products are interchangeable without verification.
When looking for a replacement, compare the critical dimensions (inner diameter, outer diameter, width), load capacity and type of sealing. A similar code does not ensure the same performance.
At MR Accesorios Industriales we help you identify the correct equivalent if you send us the Rexnord code or the measurements of the part. We also carry other brands of housings and bearings, so we can indicate the option compatible with your equipment.
Frequent mistakes when replacing or buying Rexnord
Avoid these common mistakes to ensure a correct purchase and reliable operation:
Confusing similar series
ZAS and ZA, or ZEP and ZEPS, may look the same but are different series. Check the complete code before ordering.
Ignoring the suffix
The U suffix or other letters in the code indicate important characteristics. A bearing without the correct suffix may not be compatible.
Not considering internal clearance
A bearing with standard clearance may fail prematurely in applications with high temperatures or impact loads. Ask if you need C3 or greater.
Choosing the wrong housing type
A pillow block is not the same as a cartridge or Y housing. Check the fixing method and the housing dimensions.
Not checking the sealing
In environments with dust or humidity, inadequate sealing shortens bearing life. Choose the variant with adequate protection.
Assembly, lubrication and maintenance
Correct assembly and adequate lubrication are key to extending the service life of Rexnord components.
Assembly
Clean the shaft and housing before installing. Use appropriate tools to avoid damaging the seals. For insert bearings, respect the tightening torque of the set screws or the locking collar.
Lubrication
Use the grease recommended by the manufacturer. In housings with a grease fitting, lubricate periodically according to the maintenance plan. Avoid excess grease, which can cause overheating.
Maintenance
Regularly inspect the condition of the seals and the operating temperature. If there are abnormal vibrations or noises, stop the equipment and check the bearing. Replace worn components in time to avoid major damage.
Why get a Rexnord quote at MR Accesorios Industriales
MR Accesorios Industriales is an Argentine company with a track record since 1945, specialized in the sale of power transmission components. We work with the Rexnord brand and offer technical advice so you can choose the right product.
You can get a quote via WhatsApp or email by sending us the Rexnord code, the measurements or a photo of the part. We will reply shortly with the proposal.
We are in Buenos Aires, Argentina, and we ship nationwide.
Frequently asked questions about REXNORD
- Where to buy Rexnord bearings in Argentina?
- At MR Accesorios Industriales, Buenos Aires, we carry Rexnord bearings and other lines of the brand. You can get a quote via WhatsApp or email with the code or measurement.
- How to identify a Rexnord bearing?
- Rexnord codes combine letters and numbers. For example, 2303U is a spherical roller bearing with the U suffix. If you have doubts, send us a photo of the part.
- What does the U suffix mean in Rexnord?
- The U suffix is part of the Rexnord designation of inserts and spherical rollers, such as 2303U and 3107U. Always get a quote with the complete code.
- Does Rexnord have pillow blocks?
- Yes, Rexnord has bearing housings in several series: ZAS, ZA, ZEP, ZEPS, ZCS, ZMC, ZEF, ZT and ZB. Each has different mounting characteristics and capacity.
- What is a Rexnord Y-housing?
- It is a pillow block assembly with a self-aligning insert bearing. It is fixed to a flat surface and used in conveyors and process equipment. Example: P2B-107-T.
- Does Rexnord manufacture friction bushings?
- Yes, Rexnord has filament-wound friction bushings, such as the Duralon line. They are self-lubricating and corrosion-resistant, suitable for humid or hard-to-reach environments.
- How to request a Rexnord equivalent?
- Send us the Rexnord code or the measurements of the part via WhatsApp or email. We compare dimensions and characteristics to indicate the compatible option.
- Does MR Accesorios Industriales ship Rexnord products?
- Yes, we ship nationwide from Buenos Aires. Get a quote for your order and we will coordinate delivery.
Updated September 29, 2026