Germany boehler seals boehler model boehler price

boehler seals are a typical representative of oil seals; generally, the term oil seal refers to skeleton oil seals. The function of an oil seal is generally to isolate components requiring lubrication in transmission parts from the external environment, preventing lubricating oil leakage. The skeleton acts like reinforcing steel in concrete components, providing reinforcement and enabling the oil seal to maintain its shape and tension. According to structural form, they can be divided into single-lip skeleton oil seals and double-lip skeleton oil seals. The secondary lip of a double-lip skeleton oil seal serves a dust-proof function, preventing external dust, impurities, etc., from entering the machine interior. According to skeleton type, they can be divided into inner-covered skeleton oil seals, exposed skeleton oil seals, and assembled oil seals. According to operating conditions, they can be divided into rotating skeleton oil seals and reciprocating skeleton oil seals. Used for gasoline engine crankshafts, diesel engine crankshafts, gearboxes, differentials, shock absorbers, engines, axles, and other parts.

boehler seals introduction

Mechanical seals are shaft sealing devices for rotating machinery, such as centrifugal pumps, centrifuges, reaction vessels, and compressors. Since the drive shaft passes through the inside and outside of the equipment, there is a circumferential gap between the shaft and the equipment. Media inside the equipment leaks outward through this gap; if the pressure inside the equipment is lower than atmospheric pressure, air leaks into the equipment. Therefore, a shaft sealing device to prevent leakage is required. There are many types of shaft seals. Due to advantages such as low leakage and long service life, mechanical seals are the primary shaft sealing method for these equipment worldwide. Mechanical seals are also called face seals. In relevant national standards, they are defined as: "A device that prevents fluid leakage, constituted by at least one pair of faces perpendicular to the axis of rotation that maintain contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism, in conjunction with auxiliary seals."

boehler seals structural composition

1) Main components: rotating ring, stationary ring, cooling device, and compression spring (depending on specific equipment). 2) Auxiliary sealing elements: sealing rings (including O-shape, X-shape, U-type, wedge shape, rectangular flexible graphite, PTFE-covered rubber O rings, etc.). 3) Elastic compensation mechanism: springs, thrust rings. Spring seats and keys or various screws. 4) Classification: Divided into single face, double face; balanced type, unbalanced type; arbitrary rotation direction, fixed rotation direction.

boehler seals precautions

1) Shaft speed: Due to design and structural reasons, high-speed shafts should use high-speed oil seals, while low-speed shafts should use low-speed oil seals. Low-speed oil seals must not be used on high-speed shafts, and vice versa. 2) Ambient temperature: In cases of higher operating temperatures, polyacrylate or silicone, fluorine, or silicone-fluorine rubber should be selected. Measures should be taken to reduce the oil temperature in the tank. In cases of excessively low operating temperatures, cold-resistant rubber should be selected. (3) Pressure: General oil seals have poor pressure resistance; excessive pressure will cause the oil seal to deform. Under conditions of excessive pressure, pressure-resistant support rings or reinforced pressure-resistant oil seals should be used. 4) Installation eccentricity: If the eccentricity between the oil seal and the shaft is too large, sealing performance will deteriorate, which is particularly severe at high shaft speeds. If the eccentricity is too large, oil seals with a "W" cross-section can be used. 5) Shaft surface finish directly affects the service life of the oil seal; that is, a higher shaft surface finish results in a longer oil seal service life. 6) Ensure that there is an adequate amount of lubricating oil at the lip of the oil seal. 7) Pay special attention to preventing dust from entering the oil seal.

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