BGL guide
What BGL manufactures and what sets it apart
BGL manufactures fixing and mounting components for bearings and other transmission elements. Its specialty is adapter and withdrawal sleeves for tapered bore bearings: adapter sleeves are mounted on plain shafts, without the need for a shoulder or special machining, and withdrawal sleeves are used on shafts with a support shoulder. It also produces lock nuts, hydraulic nuts, lock washers and mounting tools such as hook spanners.
BGL products are characterized by their construction in high-strength nodular cast iron, with options in carbon or stainless steel for specific applications. Hydraulic sleeves incorporate internal channels for injecting oil under pressure, which facilitates the mounting and dismounting of bearings on large-diameter shafts. This combination of materials and design makes BGL a reliable option for industrial maintenance in Argentina.
BGL lines sold by MR
MR Accesorios Industriales sells two main categories of BGL: Bushings and sleeves and Mounting and maintenance tools. Within bushings and sleeves, we work with the following subcategories:
Adapter sleeve
Includes series H, HE, HA, HS and inch sleeves. They are used to fix tapered bore bearings on plain shafts.
Hydraulic sleeve
Series AOH, OH, OHE and variants with oil channels for assisted mounting and dismounting.
Withdrawal sleeve
Series AH, AHX and GG variants for shafts with a support shoulder.
Lock nut
Series KM, HM, HMZ and others to secure sleeves and bearings.
Hydraulic nut
Series HMV…E with a dial gauge seat, for impact-free mounting.
Lock washer
MS locks and MB washers for locking nuts.
Inch adapter sleeve
Series HE and HA in imperial sizes for specific applications.
Mounting and maintenance tools
Series HN hook spanners for KM and HM slotted nuts.
Main BGL series
BGL organizes its products into series that identify the type of component and its application. Below are the most relevant series we sell at MR.
Series H: standard adapter sleeve
The series H adapter sleeve is one of the most used series for mounting tapered bore bearings on plain shafts. It is supplied complete with nut and lock washer. Examples: H204, H205.
Series AH: withdrawal sleeve
The series AH withdrawal sleeve is used on shafts with a support shoulder. Its external thread serves to dismount the assembly. Examples: AH208, AH209.
Series AOH: hydraulic withdrawal sleeve
The series AOH hydraulic withdrawal sleeve has the same dimensions as the withdrawal sleeve, with oil channels that facilitate mounting and dismounting on medium and large shafts. Examples: AOH234, AOH236.
Series OH: hydraulic adapter sleeve
The series OH…H is an adapter sleeve with oil injection channels that facilitate mounting and, above all, dismounting; it is recommended from 140 mm shafts. Examples: OH2332H, OH2334H.
Series HE: adapter sleeve
HE sleeves are adapter sleeves supplied with nut and lock. Examples: HE205, HE206.
Series HA: adapter sleeve for general applications
The HA series covers a wide range of sizes for tapered bearings. Examples: HA204, HA206.
Series HS: adapter sleeve
HS sleeves are adapter sleeves of another dimensional series; the complete code identifies the combination with the bearing. Examples: HS206, HS208.
Series OHE: hydraulic adapter sleeve
The OHE series combines internal and external channels for oil injection, optimizing dismounting. Examples: OHE2332H, OHE2334H.
Series AHX: withdrawal sleeve
AHX sleeves are withdrawal sleeves for shafts with a support shoulder. Examples: AHX310, AHX311.
Series HMV: hydraulic nut
HMV…E hydraulic nuts allow mounting and dismounting bearings without impacts, using a manual pump. Examples: HMV10E, HMV11E.
How to read a BGL code
The designation of BGL products follows a logic of letters and numbers that indicates the type of component, the size and sometimes the material or variant. Knowing this structure helps you quickly identify the correct part.
Adapter sleeve H204
The letter H identifies the adapter sleeve series. The number 204 corresponds to the tapered bore bearing series of 20 mm (04 × 5); the shaft is somewhat smaller than that bore. Thus, H204 is a sleeve for bearings with a 20 mm tapered bore.
Withdrawal sleeve AH208
AH is the withdrawal sleeve series. The number 208 corresponds to the tapered bore bearing series of 40 mm (08 × 5). AH208 is used on shafts with a support shoulder.
Hydraulic sleeve AOH234
AOH indicates hydraulic withdrawal sleeve. The number 234 corresponds to the tapered bore bearing series of 170 mm (34 × 5). AOH234 has oil channels for assisted mounting and dismounting.
Lock nut KM0
KM is the lock nut series. The number 0 is the size, which correlates with the diameter of the sleeve or shaft. KM0 is the smallest nut in the series.
Lock washer AW1
AW identifies lock washer. The number 1 indicates the size, which must match the corresponding nut. AW1 is used with small KM nuts.
Hook spanner HN1
HN is the hook spanner series. The number 1 indicates the size of the spanner, which is selected according to the slotted nut to be adjusted. HN1 is for small nuts.
Frequent BGL prefixes and suffixes
In addition to the series letters, BGL uses suffixes and prefixes that indicate specific product characteristics. These are the most common:
H (adapter sleeve)
Prefix that identifies standard adapter sleeves for plain shafts.
AH (withdrawal sleeve)
Prefix for withdrawal sleeves with external thread, used on shafts with a shoulder.
AOH / OH / OHE (hydraulic sleeve)
Prefixes that indicate sleeves with oil channels for hydraulic mounting and dismounting: AOH is for withdrawal, and OH and OHE are for adapter.
GG (design variant)
Suffix that appears on withdrawal sleeves such as AH32/530GG, indicating a specific design variant.
E (dial gauge seat)
Suffix on HMV…E hydraulic nuts that indicates the presence of a dial gauge seat, useful for controlling axial advance.
X1.5 (special thread pitch)
Suffix on hydraulic nuts such as HMV11X1.5E that indicates a variant with a 1.5 mm thread pitch.
Applications by industry in Argentina
BGL products are used in a wide variety of industries in Argentina. Below, we detail the most common applications by sector.
Metallurgy
In the metallurgical industry, BGL adapter and withdrawal sleeves are used in rolling mills, presses and process equipment where tapered bore bearings must be mounted on plain shafts. HMV…E hydraulic nuts facilitate impact-free mounting on large bearings.
Agriculture
In agriculture, series H and HE adapter sleeves are used in agricultural machinery such as harvesters and grain processing equipment. Their ease of mounting and dismounting is key for field maintenance.
Naval
In the naval industry, AOH and OH hydraulic sleeves are used in gearboxes, pumps and transmission systems, where periodic dismounting is necessary. MS lock washers secure the nuts in vibrating environments.
Oil & gas
In the oil sector, BGL adapter sleeves and nuts are used in pumps, compressors and process equipment. HMV…E hydraulic nuts allow controlled mounting without impacts.
Food
In food plants, BGL adapter sleeves are used in conveyors, mixers and process equipment. The stainless steel option is suitable for environments with sanitary requirements.
Mining
In mining, BGL hydraulic and withdrawal sleeves are used in mills, crushers and conveyor belts. Oil-assisted dismounting on large-diameter shafts helps reduce downtime.
Paper
In the paper industry, BGL adapter sleeves and nuts are used in rollers, calenders and paper machines. Precision in mounting is critical to avoid vibrations and premature wear.
Cement
In cement plants, AOH and OH hydraulic sleeves are used in fans, gearboxes and large conveyors. Hydraulic dismounting facilitates the maintenance of large bearings.
Energy
In power generation, BGL adapter sleeves and nuts are used in pumps, fans and auxiliary equipment. HMV…E hydraulic nuts allow controlled mounting without damaging components.
Automotive
In the automotive industry, series H and HE adapter sleeves are used in conveyors and line equipment. Their standardization facilitates replacement during maintenance.
Plastics
In the plastics industry, BGL adapter sleeves are used in conveyors, gearboxes and recycling equipment. Secure fixing prevents axial displacement on rotating shafts.
Refrigeration
In refrigeration plants, BGL adapter sleeves and nuts are used in conveyors, pumps and compressors. The corrosion resistance of stainless steel is valued in humid environments.
Sugar
In the sugar industry, BGL adapter and withdrawal sleeves are used in mills, crushers and conveyors. Simple mounting allows quick maintenance during the harvest.
How to choose the right BGL
Choosing the right BGL sleeve, nut or washer requires considering several technical factors. These are the main criteria:
Shaft and bearing diameter
The sleeve code must correspond to the shaft diameter and the tapered bore of the bearing. For example, an H204 sleeve is for bearings with a 20 mm tapered bore, and the shaft is somewhat smaller than that bore. Verify the exact measurements before ordering.
Mounting type: adapter or withdrawal
If the shaft is plain, use an adapter sleeve (H, HE, HA). If the shaft has a support shoulder, use a withdrawal sleeve (AH, AHX). For frequent dismounting, choose hydraulic sleeves (AOH, OH, OHE).
Working load and speed
The sleeve series is defined by the bearing to be mounted, not the load: verify the series and size of the bearing. The material (nodular cast iron or steel) also influences the load capacity.
Environmental conditions
In corrosive environments or with sanitary requirements, opt for stainless steel versions. BGL offers options in carbon or stainless steel in several of its products.
Maintenance frequency
If the bearing is dismounted frequently, hydraulic sleeves and HMV…E hydraulic nuts reduce time and the risk of damage. For occasional mounting, standard adapter sleeves are sufficient.
Compatibility with nuts and washers
Adapter sleeves are supplied with their nut and lock washer; in withdrawal sleeves, the nut and washer are ordered separately. When replacing, make sure the components are compatible in size and thread. For example, an H204 sleeve is combined with a KM nut and a lock washer of the same size.
Equivalences and interchangeability
Several BGL codes appear with the same designation in other brands in our catalog, such as NTN, TIMKEN or SKF. This helps when you need to replace an existing part or compare options; in all cases it is advisable to verify dimensions and sleeve type. Below are some examples:
H30/500
BGL adapter sleeve H30/500 appears with the same code in NTN H30/500. It is for bearings with a 500 mm tapered bore.
OH3038H
BGL hydraulic sleeve OH3038H appears with the same code in TIMKEN OH3038H. Verify the exact dimensions.
OH3056H
BGL hydraulic sleeve OH3056H appears with the same designation in SKF OH 3056 H and TIMKEN OH3056H. Verify the exact dimensions.
OH3092H
BGL hydraulic sleeve OH3092H appears with the same code in TIMKEN OH3092H. It is for bearings with a 460 mm tapered bore.
Frequent mistakes when replacing or buying BGL
When working with BGL sleeves and nuts, it is common to make mistakes that can cause mounting failures or damage to bearings. These are the most frequent and how to avoid them:
Confusing adapter sleeve with withdrawal sleeve
An adapter sleeve (H, HE) is used on plain shafts, while a withdrawal sleeve (AH, AHX) requires a support shoulder. Using the wrong type can cause unstable mounting or damage to the shaft.
Not verifying the shaft diameter
The number in the code is not the shaft diameter: in H204 it refers to a 20 mm bearing bore (04 × 5) and in H30/500 to a 500 mm bore. Always confirm the actual measurement with the catalog or consult us.
Ignoring the code suffix
Suffixes such as GG, E or X1.5 indicate important variants. An AH32/530GG sleeve is not the same as an AH32/530 without the suffix. Pay attention to the complete code.
Using incompatible nuts or lock washers
Each adapter sleeve is supplied with its corresponding nut and washer. Mixing components of different sizes can result in poor fit or loosening. Always use the recommended assembly.
Not considering the material for corrosive environments
In food or chemical plants, using standard nodular cast iron sleeves can lead to premature corrosion. Choose stainless steel versions when necessary.
Mounting without adequate lubrication
Hydraulic sleeves require clean oil at the correct pressure to work. Not using the right oil or not purging the system can damage the internal channels.
Mounting, lubrication and maintenance
Correct mounting and adequate maintenance extend the service life of BGL sleeves and nuts. These are the recommended practices:
Preparation of the shaft and bore
Before mounting, clean the shaft and the bearing bore. Verify that there are no burrs or surface damage. Apply a thin layer of oil or grease to facilitate sliding.
Mounting adapter sleeves
Place the sleeve on the shaft and slide the bearing to the desired position. Tighten the nut gradually, checking the radial clearance. Use an HN hook spanner of the correct size to avoid damaging the slots.
Mounting hydraulic sleeves
Connect the hydraulic pump to the injection channel and apply pressure slowly. The oil creates a film that reduces friction. Control the advance with a dial gauge if you use an HMV…E nut.
Lubrication of nuts and threads
Apply grease or oil to the threads of nuts and sleeves before mounting. This prevents seizing and facilitates future dismounting. In corrosive environments, use lubricants with inhibitors.
Periodic inspection
Periodically check the tightness of the nuts and the condition of the lock washers. If you detect loosening or wear, replace the components before they cause bearing failures.
Damage-free dismounting
To dismount, use hydraulic sleeves or hydraulic nuts that apply uniform pressure. Avoid hammer blows, which can damage the shaft or bearing. If you use a withdrawal sleeve, make sure the thread is clean and lubricated.
Why get a BGL quote at MR Accesorios Industriales
MR Accesorios Industriales is the exclusive representative of BGL in Argentina, with experience in the sector since 1945. We sell BGL bushings and sleeves, and mounting tools, with an online catalog with photos and specifications.
From Buenos Aires, Argentina, we serve customers throughout the country. You can get a quote via WhatsApp or email by sending the BGL code, the measurement or a photo of the part. Our technical team helps you identify the correct product and responds promptly.
Frequently asked questions about BGL
- What is a BGL adapter sleeve?
- A BGL adapter sleeve is a component that allows mounting tapered bore bearings on plain shafts. It is supplied with nut and lock washer, and is adjusted to fix the bearing in position. The most common series are H, HE and HA.
- How do I know which BGL sleeve I need?
- You need to know the shaft diameter and the tapered bore of the bearing. The sleeve code indicates the size: for example, H204 is for bearings with a 20 mm tapered bore. If you have doubts, send the measurements or a photo to MR and we will help you identify it.
- Does BGL manufacture hydraulic sleeves?
- Yes, BGL manufactures hydraulic sleeves in series AOH, OH and OHE. These sleeves have internal channels for injecting oil under pressure, which facilitates the mounting and dismounting of bearings on large-diameter shafts.
- What is a BGL HMV…E hydraulic nut?
- The HMV…E hydraulic nut is a tool that is operated with a manual pump to mount and dismount bearings without impacts. The letter E indicates that it has a dial gauge seat, allowing precise control of axial advance.
- Are BGL codes equivalent to those of other brands?
- Several BGL codes appear with the same designation in brands such as NTN, TIMKEN or SKF. For example, H30/500 from BGL also appears in NTN. Always verify the exact dimensions before replacing.
- Is MR the exclusive representative of BGL in Argentina?
- Yes, MR Accesorios Industriales is the exclusive representative of BGL in Argentina. We sell the brand's bushings and sleeves, and mounting tools, with an online catalog and technical advice.
- How do I get a quote for a BGL product at MR?
- You can get a quote via WhatsApp or email by sending the BGL code, the measurement or a photo of the part. Our team responds promptly with your quote.
Updated September 29, 2026