Learn about the two types of mounted pillow block for bearing in 1 minute.

mounted pillow block for bearing

There are two types of mounted pillow block for bearing: semi-open type and closed type. The common failure mode is commonly known as "running ring", which is mainly caused by friction and wear of the outer ring of the bearing and the hole. Use 2311 anti-friction repair agent (super slip metal TM), 2215 wear-resistant repair agent (titanium alloy TM), etc. can easily restore the size of the bearing hole
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The basic model of bearing seat:
The standard mounted pillow block for bearing has a specific basic model, usually with three, four or five numbers, or letters and numbers, the first number or the first letter or letter combination indicates the type of mounted pillow block for bearing ; The first two digits determine the ISO size series; the first digit represents the width or height series (identified as size B, T or H), and the second digit represents the diameter series (dimension D).

The final two digits of the basic model are the size code of the mounted pillow block for bearing; multiply by 5 to get the inner diameter in millimeters. However, there are a few exceptions as follows:
1. In some cases, the number indicating the type of mounted pillow block for bearing and the first number indicating the size series are omitted. Example: 6 (0) 208-2Z (0) 3209A.
2. Regarding mounted pillow block for bearing with inner diameter less than or equal to 10 mm or greater than or equal to 500 mm, the inner diameter is usually expressed in millimeters indirectly, without code. The dimensions are separated from the other parts of the housing model with diagonal lines, for example: 618/8 (d = 8 mm) or 618 / 530MA (d = 530 mm).

3. Bearing seats with inner diameters of 10, 12, 15 and 17 mm have the following size code signs: 00 = 10 mm 01 = 12 mm 02 = 15 mm 03 = 17 mm

4. With regard to a few small bearing housings with an inner diameter of less than 10 mm, such as deep grooves, self-aligning and angular contact ball bearing housings, the inner diameter is also expressed in millimeters (no code), but it does not need to be separated from the series model by a slash , For example 629 or 129 (d = 9 mm).

Semi-open mounted pillow block for bearing
Wear-resistant repair agent (titanium alloy TM) can easily restore the size of the bearing hole.
(1) Surface treatment of mounted pillow block for bearing: The surface to be repaired is best polished into cross-shaped grooves. Pay attention to keep the unworn surface of the bearing hole on both sides in the circumferential direction as the positioning surface of the mold.
(2) Degreasing and degreasing of mounted pillow block for bearing: Use Kesaixin @ 1755 detergent to strictly clean the surface of oil stains.
(3) Processing die for mounted pillow block for bearing, where: die outer diameter = bearing outer ring diameter; die length (L) is greater than hole width 20 ~ 40mm; roughness is subject to original bearing seat design requirements

(4) Apply a thin layer of Kesaixin 1731 release agent on the processed mold.
(5) Formulate the repairing agent and apply it to the upper and lower sides to be polished and cleaned to be repaired, leaving enough margin.
(6) Place the mold on the lower half of the bearing housing, compact it, and clean up the spilled glue.
(7) Fasten the upper case coated with the repair agent, and fasten it with bolts according to the assembly requirements. Wipe away any spillage before the repair agent cures.
(8) After curing for 8 ~ 16 hours (at 25 ° C), disassemble the bolts, remove the mold (the mold has 1731 release agent, you can easily remove it), use sand cloth or file to trim the corners, check and repair Good bearing hole size and surface quality.

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