The Boschert Classic Series Safety Chuck has been the standard of the industry since Boschert invented the Safety Chuck in 1948. This is a rugged Safety Chuck with lots of capacity built in for future upgrades. The concentricity of this unit is comparable with the Boschert Value Master. These units feature square openings case hardened to Rockwell 56 C. This Safety Chuck series is best suited to slow running unwinds and winders. The Boschert Safety Chuck design employs a tilting hand wheel to lock the end of the customer’s square journal in the square opening of the Safety Chuck. This is a superior design because it allows the load bearing surface of the customer’s journal to be closer to the first set of bearings in the Safety Chuck housing. Other Safety Chuck designs require room behind the load bearing area of their Safety Chuck. They need the space to allow a locking collar or cam to move back in order to exchange journals. Such design places the load bearing area of their Safety Chuck farther away from the first set of bearings. This outboard design causes greater stress to the Safety Chuck drive shaft and any eccentricity to the roll shaft is magnified in wear to that design Safety Chuck.
|330||29||1350||20mm and .75"|
|19-25||880||90||1350||25mm and 1"|
|22-30||1760||130||1350||30mm and 1.25"|
|30-40||3520||250||1350||40mm and 1.5"|
|40-50||6200||800||1350||50mm and 2"|
|50-80||15400||1700||1100||80mm and 3.125"|
|80-120||26450||7300||900||120mm and 4.75"|
|120-180||48500||14800||700||180mm and 7"|
|170-200||70546||18500||500||200mm and 7.875"|
|170-230||141092||30300||500||230mm and 9"|
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