An evolved hydraulic tensioner that overcomes the challenges of conventional tensioners, such as "too heavy," "does not fit in narrow spaces," and "oil leakage due to repeated use."
The hydraulic bolt tensioner from "Boltight," a member of the Nord-Lock Group, was born as an evolved version re-invented by the engineer Fred Heaton, who developed the tensioner itself, to overcome the challenges faced by the tensioner. These challenges include common disadvantages of hydraulic tools like tensioners, such as being "too heavy and difficult to work with," "leaking oil after repeated use," and "not being installable in confined spaces." All of Boltight's tensioners have been significantly lightweighted to the extreme, using in-house developed bridges and seals to greatly reduce the weight of the tensioner. Additionally, the durability for repeated use has been greatly improved with technologies such as in-house developed seals. Furthermore, we can flexibly customize the shape and size for areas where space constraints prevent application, delivering them with the same lead time as standard products.
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basic information
<Voltite Hydraulic Solution Standard Product Lineup> ■ Standard Tensioner ・Standard Size Range: M16 to M100 (Other sizes available as custom products) ■ TSR (Standard Equipped with Spring Return Function) ・Standard Size Range: M20 to M100 (Other sizes available as custom products) ■ Extra Load Tensioner (High Axial Force Compatible) ・Standard Size Range: M20 to M100 (Other sizes available as custom products) ■ Subsea Tensioner (For Underwater Operations) ・Standard Size Range: M20 to M90 (Other sizes available as custom products) ■ Typhoon Tensioner (Compact Model for Wind Turbines, etc.) ・Standard Size Range: M24 to M64 (Other sizes available as custom products) ■ Foundation Tensioner (For Anchor Tightening of Wind Turbine Foundations) ・Standard Size Range: Manufactured according to customer fastening conditions ■ Special Products (Customized Products) ・Standard Size Range: Available in any size according to requests ■ Hydraulic Nut ・M33 to M180 (Other sizes available as custom products) *Additionally, we also offer ultrasonic axial force gauges, various pumps, etc.
Price range
Delivery Time
P4
※Standard products take about 1 month. Custom products can take up to about 3 months.
Applications/Examples of results
<Representative Usage Achievements> ■Power - Casing for gas turbines and steam turbines - Reactors and power generation equipment at nuclear power plants - Coupling parts of turbine rotors - Generators - Heat exchangers - Wind turbines (tower coupling parts, fastening of foundation anchor bolts) - Large bearing parts of wind power generation equipment, etc. ■Construction and Civil Engineering - Fastening of steel frames in bridge construction - Fastening of hanger wires in suspension bridges - Fastening of anchor bolts for structural foundations, etc. ■Oil & Gas (including offshore facilities) - Coupling of piping flanges - Small flanges - Heat exchangers - Cranes - Pump casings - Compressor casings - Valves *For more details, please contact Nord-Lock Japan Co., Ltd.
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Company information
Nortlock Japan Co., Ltd. aims to be a partner in solving all bolt fastening challenges, centered around four brands: the "Nortlock Washer," a locking mechanism that does not rely on friction and prevents loosening; the "Superbolt," which allows enormous bolts and nuts that cannot be tightened by hand to be tightened with just one torque wrench; the "Boltight," which can simultaneously tighten multiple large-diameter bolts with uniform pressure; and the "Expander," a pivot pin for construction and heavy machinery that can be used semi-permanently.