BGL dimensions: how to identify the code from the part and what data to send for a quote

BGL adapter sleeves are used to mount bearings with a tapered bore on cylindrical shafts. They are parts with a longitudinal slot and a nut that, when tightened, pushes the sleeve against the shaft and secures the bearing. They are identified with codes such as H210, H211 or H310, which correspond to adapter sleeve series.

To identify the code from the part, measure the sleeve's bore diameter with a caliper. That measurement, in millimeters, is the first data point to locate the code within the series. You can also check if the code is engraved on the outer surface or on the nut. If the part is very worn, a photo with a ruler next to it helps confirm the measurement.

When requesting a quote, send us the shaft diameter, the sleeve's total width and, if you have it, the code of the bearing it will mount. Avoid confusing the bore diameter with the outer diameter. If you have doubts, take a photo of the sleeve next to a ruler and send it to us via WhatsApp or email.

BGL hydraulic sleeves are used to mount large bearings where mechanical interference is not enough. They are mounted with oil under pressure, which expands the sleeve to slide it onto the shaft. Typical codes are AOH248, AOH234 or AOH252, which correspond to hydraulic sleeves.

To identify a hydraulic sleeve, measure the bore diameter and the total width. Also observe if it has a thread at the end for the hydraulic nut and if it has an oil hole. Compare those measurements with the BGL catalog tables, but if you don't have the catalog, send us the measurements and we'll tell you the corresponding code. Many times the code is engraved on the front face of the sleeve.

When requesting a quote, include the shaft diameter, the sleeve width and the thread type if you can measure it. If the sleeve comes with its hydraulic nut, mention the nut code if you see it. Avoid forcing identification only by the outer diameter, because two sleeves with the same bore diameter can have different widths and belong to different series.

BGL withdrawal sleeves are used to dismount bearings with a tapered bore. They have a thread at the end, where a nut is placed for dismounting. Common codes are AH210, AH211 or AH310, which correspond to withdrawal sleeves.

To identify a withdrawal sleeve, measure the bore diameter and the total width. Also check if it has a thread at the end and if the nut is part of the assembly. Sometimes the code is engraved on the outer surface, but if it's not visible, the measurements are enough to determine it. Compare with the reference tables.

When requesting a quote, send us the shaft diameter, the sleeve width and a photo of the part. It is important to clarify if you need only the sleeve or also the withdrawal nut. Avoid confusing it with an adapter sleeve: if you have doubts, send us a photo and we'll verify it.

BGL lock nuts are used to secure adapter sleeves and bearings on shafts. They have an internal thread and slots on the outer face for tightening with a special wrench. Typical codes are KMP1, KM20 or KMP2, which correspond to lock nuts. For example, a KM20 nut has an M100x2 thread.

To identify a lock nut, measure the thread's bore diameter with a caliper and, if you can, the thread pitch with a thread gauge. Those two measurements give you the thread designation, which is what defines the code. Also observe if it has a radial hole for a locking screw or if it is self-locking. Many nuts have the code engraved on the front face.

When requesting a quote, indicate the nominal thread diameter and pitch, or directly the code if you see it. If the nut comes with a lock washer, mention if you need it too. Avoid measuring only the outer diameter, because it does not determine the code: what matters is the internal thread.

BGL hydraulic nuts are used together with hydraulic sleeves to mount large bearings. They have an internal piston that, when oil is injected, pushes the sleeve against the bearing. Codes such as HMV18E, HMV36E or HMV54E indicate the thread diameter in millimeters: HMV18E corresponds to a 90 mm thread, HMV36E to 180 mm and HMV54E to 270 mm.

To identify a hydraulic nut, measure the thread's bore diameter and pitch. Also check if it has a hole for the hydraulic pump coupling and a pressure gauge. The code is usually engraved on the outer face, but if it's not visible, you can deduce it from the thread measurement. Compare with the reference table: each HMV number corresponds to a specific thread diameter.

When requesting a quote, send us the thread diameter, the pitch and a photo of the nut. If you use it with a hydraulic sleeve, indicate the sleeve code to verify compatibility. Avoid confusing the hydraulic nut with a common lock nut: the hydraulic one is more robust and has an oil connection.

BGL lock washers are placed between the lock nut and the bearing to prevent the nut from loosening. They have an internal tab that fits into the sleeve's slot and external tabs that are bent over the nut. They are designated with codes from the MB series, whose number matches that of the nut.

To identify a lock washer, measure the bore diameter and the tab width. Also observe if it has an internal or external tab, because that defines the type. Many washers have the code engraved, but if not, with the measurements and the nut code you can determine it. For example, a washer for a KM20 nut is designated MB20.

When requesting a quote, indicate the bore diameter, the tab type and, if you have it, the code of the nut it is used with. Avoid ordering only by the outer diameter, because there are washers with the same outer diameter but different bore. A photo with a ruler helps confirm the measurement.

BGL also has inch adapter sleeves, for shafts with imperial dimensions. The measurement logic is the same as for metric ones, but with the shaft diameter in inches.

To identify an inch sleeve, measure the bore diameter with a caliper and convert to inches (1 inch = 25.4 mm). If the bore diameter is 25.4 mm, it corresponds to a 1-inch shaft. Also check if the code is engraved or if the nut has markings. Compare with the conversion tables to confirm.

We also handle BGL mounting and maintenance tools. To request a quote, indicate the tool type and the code of the part it is used on, or send a photo of the nut or sleeve and we'll guide you.