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SKF Extra Large Induction Heater TIH L series
SKF Induction Heater TIH L series
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The SKF Induction Heater TIH L series are intended for heating large size rolling bearings and components forming a closed circuit such as housings, gear wheels and couplings.

With advanced power electronics and a dual coil design, the TIH L series can heat large bearings up to 1 200 kg (2 600 lbs), using just 20 kVA of electrical power. This is a power saving of almost 50% compared to traditional induction heaters. Unusually for a bearing heater for large bearings, the TIH L series can be supplied in medium and low voltage versions. Available with two different operating areas, the TIH L series suits most bearings up to 1 200 kg.
  • High heater efficiency saves energy costs and helps to reduce CO2emissions.
  • Bearings and work pieces can be heated vertically or horizontally. This gives users real flexibility in using TIH L series heaters.
  • Easy bearing loading thanks to an ergonomically designed sliding yoke.
  • No need to use valuable crane time to lift the yoke.
  • Bearing support arms can be used when heating bearings horizontally. This improves handling and improves user safety
  • Supplied with a remote control panel, detachable from the heater. This improves ease of use and helps reduce the risk of contact with the hot bearing during operation.
  • Compact design allows the TIH L series heaters to be easily transported by forklift
  • Temperature mode pre-set at 110 C (230 F), helps prevent bearing overheating
  • Time mode for heating components other than bearings, allows flexibility in application
  • 2-step power setting is ideal for use with sensitive bearings, helping to ensure that the bearings rolling elements dont lock up during heating
  • Automatic demagnetization
  • 3 year warranty

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Technical data

MV: 400-460 V/50-60Hz

LV: 200-240 V/50-60Hz
Work piece maximum weight
Bearing: 1 200 kg (2 600 lbs)

Solid component: consult SKF
Coil diameter
175 mm (6.8 in.)
for minimum work piece bore diameter of 185 mm (7.2 in.)
Standard yoke cross section
100 x 100 mm (3.9 x 3.9 in.)
for minimum work piece bore diameter of: 150 mm (5.9 in.)
Operating area (w x h)

TIH L44:
425 x 492 mm (16.7 x 19.4 in.)
TIH L77:
725 x 792 mm (28.4 x 31.2 in.)
Maximum heating
temperature (approx)
400 C (750 F)
Temperature control
0-250 C (32-482 F); in steps of 1
Probe type
thermocouple, K type
Temperature accuracy
2 C ( 3.6 F)
Time mode
0-120 minutes; in steps of 0,1 minute
Power reduction
Automatic; residual magnetism <2A/cm
Error guidance codes
Thermal overload protection
Recommended line protection
50 A fuse rating for MV execution

100 A for LV execution
Power consumption (maximum)
MV: 20.0-23.0 kVA

LV: 20.0-24.0kVA
Overall dimensions
(w x d x h)

TIH L44:
Excl. legs: 1 200 x 600 x 850 mm (47.3 x 23.6 x 33.5 in.)

Incl. legs: 1 550 x 1 330 x 850 mm (61 x 52.4 x 33.5 in.)
TIH L77:
Excl. legs: 1 320 x 600 x 1 150 mm (52 x 23.6 x 45.3 in.)

Incl. legs: 1 850 x 1 330 x 1 150 mm (72.8 x 52.4 x 45.3 in.)

TIH L44:
300 kg (660 lbs)
TIH L77:
370 kg (815 lbs)
Warranty period
3 years

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