| Bearing Load | (english) A compressive load supported by a member, usually a tube or collar, along a line where contact is made with a pin, rivet, axle, or shaft. |
| Bearing Strength | (english) The maximum bearing load at failure divided by the effective bearing area. In a pinned or riveted joint, the iffective area is calculated as the product of the diameter of the hole and the thickness of the bearing member. |
| Bed-In | (english) Method whereby drag may be rammed in the pit or flask without necessity of rolling over. Process used in production of heavy castings. |
| Bedding | (english) Sinking a pattern down into the sand to the desired position and ramming the sand around it. |
| Bedding a Core | (english) Resting an irregularly shaped core on a bed of sand for drying. |
| Bell Mouth | (english) The flaring or tapering of a machined hole, usually made at the entrance end because of misalignment or spring of the cutting tool. |
| Belly Roll | (english) Roll used on the line to steady plate. |
| Belt Wrapper | (english) Line equipment used in the Tin Mill for starting coils on prime or reject reels. The belt wrapper ensures a proper start. |
| Bench Grinder | (english) A small grinding machine for shaping and sharpening the cutting edges of tools. |
| Bench Lathe | (english) A small lathe mounted on a bench or table. |