Technology
Mechanical data 27
TK Elevator
BA, TW45 | 6231003860 | 03/2023
4 Technology
4.1 Mechanical data
4.1.1 Gear unit
Single-stage worm gear with:
▪ Housing in monoblock design (EN-GJL 250) with separate AS and BS
bearing brackets
▪ Two housing variants in the respective version adapted for the mounting
surface to machine base frame and motor position:
- Vertical motor position (NBS emergency brake possible)
- Horizontal motor position (NBS emergency brake possible)
▪ Motor flange (construction size A250) integrated on housing
▪ Worm shaft made of case-hardened steel (16MnCrS5); optimised roller
bearings via stroke unit with life-time grease lubrication and optimised
seal system
▪ Worm wheel made of centrifugally cast bronze (CuSn12Ni-C-GZ) with
screw-connected hub
▪ Traction sheave shaft made of tempering steel (C60R+N and/or
42CrMo4+QT), roller bearings with oil-bath lubrication
▪ Contact pattern position of gear teeth adjustable; backlash not adjustable
▪ Components for the rope guard suitable for traction sheaves dia. / 440 /
520 and 590 in accordance with EN81-1:1998 and/or EN81-20/5.5.7 (not
generally with horizontal rope departure direction).
▪ With vertical motor position, gear teeth run under oil; with horizontal mo-
tor position, with transport oil from oil sump via worm wheel gear teeth
▪ Oil level monitoring via gauge glass; oil drain (R3/4"); casing ventilation
▪ Machine type plate
Version Unit TW45C
Axle distance [mm] 120
Gear ratio 40:3/41:2/32:1/46:1/32:3
Oil filling, motor po-
sition
[L] 4.0
Oil grade
Synthetic gear oil (polyalkylene glycol with ad-
ditives)
Designation SM1
Backlash [°] 0.03-0.07
Weight [kg] approx. 105
Tab.2 ATR_1_21_0005_0
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