SKF TIH 030m Small Induction Bearing Heater

Overview

The SKF TIH 030m is a small, portable induction heater for mounting bearings by thermal expansion. SKF combines a high heating capacity with a compact, lightweight body: the heater weighs about 21 kg yet can heat bearings weighing up to 40 kg, and the leaflet quotes heating a 28 kg spherical roller bearing to 110 °C in just 20 minutes. Placing the induction coil outside the heater housing is the design choice that makes this possible, giving shorter heating times and lower energy consumption than a coil buried inside the cabinet.

Seven Star LLC supplies the SKF TIH 030m to workshops, motor rewinders, pump service centres and plant maintenance teams in Oman and the GCC. With engineering support in Muscat, we help customers choose between the 230 V and 110 V versions and confirm that the standard yokes match the smallest bore they plan to heat.

Working Principle

As general engineering background, an induction heater works like a transformer. The primary coil carries alternating current, and a laminated yoke closes the magnetic circuit through the bore of the bearing, which acts as a single-turn secondary winding. The induced current flowing in the bearing ring heats it directly, while the heater itself stays relatively cool. Heating a bearing to around 110 °C expands the inner ring enough to slide it onto the shaft without hammering or pressing, which protects raceways and rolling elements from damage during mounting.

The SKF TIH 030m adds controls that make this process repeatable. A magnetic temperature probe and a temperature mode pre-set at 110 °C help prevent overheating of the bearing, and the controller covers a temperature range of 20 to 250 °C. After heating, the bearing is demagnetised to below 2 A/cm according to SKF norms, which matters because residual magnetism attracts wear particles into the bearing. Thermal overheating protection reduces the risk of damage to the induction coil and electronics.

As a general comparison, older workshop methods such as oil baths, hot plates or gas torches heat unevenly, are slow to control and can contaminate or locally overheat the bearing. An induction heater such as the SKF TIH 030m heats the ring cleanly and evenly, needs no open flame in the workshop and gives the technician a defined end point, which supports safer working practices and more consistent mounting quality across a maintenance team.

Engineering Design of the SKF TIH 030m

The SKF TIH 030m measures 460 × 200 × 260 mm and weighs 20.9 kg including yokes, with integrated carrying handles for moving it around the workshop. The operating area is 100 × 135 mm and the coil diameter is 95 mm. Three yokes are supplied as standard, sized for minimum bearing bores of 65 mm, 40 mm and 20 mm, so the SKF TIH 030m covers bearings with bore diameters from 20 mm up to 300 mm. Smaller yokes are stored inside the heater, reducing the risk of loss or damage. Foldable bearing support arms allow larger diameter bearings to be heated and reduce the risk of a bearing toppling during the cycle.

Operation of the SKF TIH 030m is through the SKF remote control, which carries the display and control panel so the user can stand back from the heater during the cycle. Maximum power consumption is 2.0 to 2.4 kVA. Two standard voltage versions exist: TIH 030M/230V for 200 to 240 V, 50/60 Hz, and TIH 030M/110V for 100 to 120 V, 50/60 Hz, and SKF notes that some special voltage versions are available for specific countries. For components other than bearings, SKF recommends considering its TIH L MB series instead.

Key Features

The SKF TIH 030m brings the following practical benefits to bearing mounting work, as described by SKF.

• A compact, lightweight design of about 21 kg makes the heater genuinely portable between workshop and site.
• Bearings up to 40 kg can be heated, and a 28 kg bearing reaches 110 °C in about 20 minutes.
• The induction coil sits outside the housing, which shortens heating time and lowers energy consumption.
• Foldable support arms allow larger diameter bearings and reduce the risk of the bearing toppling.
• A magnetic temperature probe and a 110 °C pre-set temperature mode help prevent overheating.
• The SKF remote control with display keeps the operator at a safe distance during heating.
• Three standard yokes cover bore diameters from 20 mm, with internal storage for the smaller yokes.
• Automatic demagnetisation to below 2 A/cm and thermal overheating protection are built in.

Industrial Applications

Hot mounting with an induction heater is the standard practice for medium-sized rolling bearings on electric motors, pumps, gearboxes, fans and conveyor pulleys. In Oman, the SKF TIH 030m fits the workshops of motor rewinding companies in Muscat and Sohar, the maintenance bases of water utilities and desalination plants, and the mechanical workshops of oil and gas operators where pump and motor overhauls are routine. Because it is light enough to carry, it is also useful for field crews who mount bearings close to the machine rather than transporting rotors to a central shop.

Seven Star LLC supplies the SKF TIH 030m together with the consumables and tools needed for a complete bearing job. Typical orders combine the heater with replacement bearings such as the SKF 6206-2RS1 deep groove ball bearing, alignment equipment such as the SKF TKSA 41 laser shaft alignment tool for reinstalling the machine, and a post-repair vibration check using the SKF Microlog Analyzer AX. Our Muscat team can advise on which yoke and support arrangement suits the bearings on your equipment list.

Technical Specifications

The SKF TIH 030m values below are taken from SKF publication PUB MP/P8 14384/4 EN.

How to Order

Send Seven Star LLC an RFQ for the SKF TIH 030m stating the voltage version you need and the typical bearing sizes you mount. Our instrumentation division in Muscat will confirm availability and lead time, advise on accessories and share the SKF leaflet attached to this page. Seven Star LLC supplies SKF maintenance products to workshops and plants in Oman and the GCC.