Extra large induction heaters

A comprehensive range for bearings and other workpieces

The SKF TIH L series heaters are designed for induction heating of large size rolling bearings. With advanced power electronics and an effective dual coil design, the TIH L series can heat large bearings weighing up to 1 200 kg (2 600 lb), using just 20 kVA of electrical power. This represents a power saving of almost 50% compared to similar induction heaters and highlights how SKF Induction Heaters are simultaneously powerful and efficient. Unusually for a bearing heater for large bearings, the TIH L series can be supplied in medium and low voltage versions.
High induction heater efficiency
  • Advanced power electronics, with accurate electric current control, help control the temperature rate increase.
  • Using just 20 kVA of electrical power, the TIH L series can heat large bearings weighing up to 1 200 kg (2 600 lb).
  • Automatic demagnetisation reduces the risk of ferrous debris contamination after heating.
  • Thermal overheating protection reduces the risk of damage to the induction coil and the electronics, enhancing reliability and safety.
  • Available with three different operating areas.
  • Available in three voltage variants to suit most operating voltages worldwide.
  • Bearings can be heated vertically or horizontally.
Technical data TIH L33
Technical data
DesignationTIH L33
Max. bearing weight700 kg (1 543 lb)
Bore diameter range115–700 mm (4.5–27.6 in.)
Operating area (w × h)300 × 320 mm (11.8 × 12.6 in.)
Coil diameter150 mm (5.9 in.)
Standard yokes (included) to suit bearing minimum bore diameter115 mm (4.5 in.)
Optional yokes to suit bearing minimum bore diameter80 mm (3.1 in.)
60 mm (2.4 in.)
Max. power consumptionTIH L33/LV: 15 kVA
TIH L33/MV: 15 kVA
Voltage *
200–240 V/50–60 Hz
400–460 V/50–60 Hz

TIH L33/LV
TIH L33/MV
Temperature control0 to 250 °C (32 to 482 °F)
Demagnetisation according to SKF norms<2 A/cm
Max. heating temperature **250 °C (482 °F)
Dimensions (w × d × h)400 × 743 × 550 mm (15.8 × 29.3 × 21.7 in.)
Total weight (incl. yokes)140 kg (309 lb)

* Some special voltage versions (e.g. 575V, 60Hz CSA ready) are available for specific countries. For additional information, please contact your local SKF authorised distributor.
** Depending on bearing or work piece weight. For higher temperatures please contact SKF

Technical data TIH L44
Technical data
DesignationTIH L44
Max. bearing weight1 200 kg (2 600 lb)
Bore diameter range150–800 mm (5.9–31.5 in.)
Operating area (w × h)425 × 492 mm (16.7 × 19.4 in.)
Coil diameter175 mm (6.9 in.)
Standard yokes (included) to suit bearing minimum bore diameter150 mm (5.9 in.)
Optional yokes to suit bearing minimum bore diameter100 mm (3.9 in.)
Max. power consumptionTIH L44/MV: 20–23 kVA
TIH L44/LV: 20–24 kVA
Voltage *
200–240 V/50–60 Hz
400–460 V/50–60 Hz

TIH L44/LV
TIH L44/MV
Temperature control20 to 250 °C (68 to 482 °F)
Demagnetisation according to SKF norms<2 A/cm
Max. temperature **250 °C (482 °F)
Dimensions (w × d × h)1 200 × 600 × 850 mm (47.3 × 23.6 × 33.5 in.)
Total weight (incl. yokes)324 kg (714 lb)

* Some special voltage versions (e.g. 575V, 60Hz CSA ready) are available for specific countries. For additional information, please contact your local SKF authorised distributor.
** Depending on bearing or work piece weight. For higher temperatures please contact SKF

Technical data TIH L77
Technical data
DesignationTIH L77
Max. bearing weight1 200 kg (2 600 lb)
Bore diameter range150–800 mm (5.9–31.5 in.)
Operating area (w × h)725 × 792 mm  (28.5 × 31.2 in.)
Coil diameter175 mm (6.9 in.)
Standard yokes (included) to suit bearing minimum bore diameter150 mm (5.9 in.)
Optional yokes to suit bearing minimum bore diameter
Max. power consumptionTIH L77/MV: 20–23 kVA
TIH L77/LV: 20–24 kVA
Voltage *
200–240 V/50–60 Hz
400–460 V/50–60 Hz

TIH L77/LV
TIH L77/MV
Temperature control20 to 250 °C (68 to 482 °F)
Demagnetisation according
to SKF norms
<2 A/cm
Max. temperature **250 °C (482 °F)
Dimensions (w × d × h)1 320 × 600 × 1 150 mm (52 × 23.6 × 45.3 in.)
Total weight (incl. yokes)415 kg (915 lb)

* Some special voltage versions (e.g. 575V, 60Hz CSA ready) are available for specific countries. For additional information, please contact your local SKF authorised distributor.
** Depending on bearing or work piece weight. For higher temperatures please contact SKF

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