Hydraulic Tools for Mounting and Dismounting
Hydraulic nuts, oil injection equipment, pumps and injectors that generate and control the force needed to drive a large bearing onto a taper or release one that is seized. Force is applied smoothly and read on a gauge instead of being guessed at. SES holds the range as an authorised SKF distributor, covering hydraulic nuts Range of thread sizes for common shaft ends; pumps Hand and air-driven high-pressure pumps with gauges; oil injectors High-pressure injectors for seat separation; pressure Very high pressures for injection, moderate for drive-up. Executions include hydraulic nuts, oil injector sets, high-pressure hand pumps, air-driven hydraulic pumps, among others. It is specified most often into mill and crusher spherical roller bearings on tapered seats and rolling mill chock and roll neck assemblies. Every part is genuine SKF through official channels, with designation, specification and options confirmed against your duty before it ships — supplied from Kolkata and our branch network, with breakdown cover that does not sit in an inbox.
Send an enquiry
Check Price & Availability.
Give us the size or the failed part — we reply on WhatsApp.
Trusted across Metals & Energy
Supplying India’s Industrial Names.
From integrated steel plants to power utilities and EPC majors — the works that cannot afford a counterfeit part specify through SES.
Methods
Hydraulic nut drive-up and oil injection release
Control
Force read on a pressure gauge
Size range
Medium to very large bearings and couplings
Requires
Oil ducts and grooves in the seat for injection
Where it runs.
You will find Hydraulic Tools for Mounting and Dismounting in the parts of a plant where this particular duty actually occurs. In practice that means mill and crusher spherical roller bearings on tapered seats, rolling mill chock and roll neck assemblies, large fan and blower shaft bearing assemblies, and equally keyless coupling and shrink disc fitting on drive trains, marine and hydro turbine shaft components. What links them is the duty rather than the machine name — methods: Hydraulic nut drive-up and oil injection release. If your installation is not on that list it matters less than you would think: the operating condition decides the specification. Send us the load, the speed, the running temperature and the environment it runs in, and we will match it to the right execution in the SKF range and confirm what is in stock.
Specify it against the duty.
Specification here follows the operating condition, not the catalogue. Tapered bore bearing driven up on an adapter or withdrawal sleeve — A hydraulic nut with a gauge and drive-up measured as a reduction in radial internal clearance. Nut angle alone hides how much interference you have actually created. Bearing seized on a shaft after long service in a hot area — Oil injection at the seat, if and only if the shaft already has the duct and groove. Injecting into a plain seat pressurises nothing and simply wastes the shutdown window. Component to be released is heavy and sits on a steep taper — A mechanical stop or retaining nut left loosely in place during the release. Parts on a taper come free suddenly and travel, and people have been badly hurt standing in line with them. Where two of those apply at once, specify for the harsher of the two — under-specifying is what puts the part back on the bench a month later. Send us the duty and we will confirm the execution.
Ordering this from SES.
Record the starting internal clearance with feeler gauges before you begin drive-up and record it again at the end. Without both figures you have no way of proving the fit, and an over-driven sleeve runs hot from the first hour of the restart.