Timken^® Tapered Single Spacer Assembly with Direct Mounting (2TS-DM)

The Timken® 2TS-IM spacer assembly with indirect mounting is designed for precise axial control and reliable performance in industrial applications such as gear reducers and machinery. Comprised of two single-row bearings with inner and outer ring spacers, the assembly is preset to establish bench end play (BEP) or preload (BPL), eliminating manual adjustment and simplifying installation while supporting consistent bearing performance and long service life.

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Application: Freight Cars

50%

reduction in torque

$92K

5-year energy savings

257 tons

total reduction in generated carbon

Bearing efficiency increases by 50% (EcoTurn seal vs. HDL seal)¹
Two bearings per axle x 4 axles per freight wagon x 100 freight
wagons per train = 800 bearings per train
Operational Time of Consideration: 5 years²
Customer Location: USA
Loco fuel consumption: 0.028 MWh/Gal³
Electricity Price: $0.13/kWh⁴
CO2 emissions: 10.18 kg CO2 per gallon

Based on torque differential per Bearing of 20 in. lbs
Assuming 5 years average wheel life
Assuming Tier 4 CO line-haul emission factors and large line-haul and passenger conversion factor
Estimation based on U.S. electricity retail price by sector 2024

Calculations
Energy Savings per Bearing: 155 W = 0.155 kW
Lifetime Energy Consumption per Wheel Life: 0.155 kW * 1143h * /a * 800 bearings / train * 5a = 708 MWh
Energy cost Savings per Train Wheel Life: 708 MHh * $130 MwH = $92,000 saved
Emissions Savings per Train Wheel Life: 708 MWh * 10.18 kg CO2/gal * 35.7 gal/MWh * 0.001 ton/kg

Application: Passenger Trains

35%

reduction in torque

$682K

30-year energy savings

1,746 tons

Bearing efficiency increases by 25% (current vs. enhanced)
- Current bearings (A) = 319W each
- Enhanced bearings (B) = 205W each
Two bearings per shaft x 4 shafts per car x 6 cars per vehicle x 10
vehicles per fleet = 480 bearings
Operational Time of Consideration: 30 years
Customer Location: Germany
$0.125 KWh (based on Germany average at the time of testing)
800.3 lbs CO2 per MWh

Source for calculations: EPA

Calculations
Energy Savings per bearing: (PA-PB) 114 W = 0.114 kW
Lifetime Energy Consumption for a Fleet of 10 Vehicles: 0.114 kW * 2930h /a * 48 bearing / vehicle * 10 vehicles * 30a = 4810 MWh
Lifetime Energy Consumption: 4810 MWh * $142/MWh = $682k

Application: Compressor

25%

reduction in torque

$4,691

23,523 lbs.

Bearing efficiency increases by 25% (current vs. enhanced)
- Current bearings = 4.0 N-m torque each, Enhanced Bearings = 3.0 N-m torque each
Two tapered roller bearings supporting the compressor shaft
Compressor driven by an electric motor operating at 3000 RPM
Operational Time of Consideration: 5 years
Customer Location: USA
$0.17 KWh (based on US average)
852.3 lbs CO2 per MWh

Source for calculations: EPA

Calculations
Torque Savings with Enhanced Product = (2 * 4.0 N-m) – (2 * 3.0 N-m) = 2.0 N-m
*Energy Consumption (Q =kNM) =* .105 * 3000 RPM * 2.0 N-m = 630 W = .630 KW
Lifetime Energy Consumption =.630 KW * (24 hrs/ day * 365 days/ yr * 5 years) = 27,594 KW = 27.6 MWh

Application: Pump

10%

reduction in torque

$841

5-year energy savings

3,827 lbs.

total reduction in generated carbon

Bearing efficiency increases by 10% (current vs. enhanced)
- Current bearings = 3.0 N-m torque each, Enhanced Bearings = 2.7 N-m torque each
Two tapered roller bearings supporting the pump shaft
Pump driven by an electric motor operating at 1800 RPM
Operational Time of Consideration: 5 years
Customer Location: USA
$0.17 KWh (based on US average)
852.3 lbs CO2 per MWh

Source for calculations: EPA

Calculations
Torque Savings with Enhanced Product = (2 * 3.0 N-m) – (2 * 2.7 N-m) = 0.6 N-m
*Energy Consumption (Q =kNM) =* .105 * 1800 RPM * 0.6 N-m = 113 W = .113 KW
Lifetime Energy Consumption = .113 KW * (24 hrs/ day * 365 days/ yr * 5 years) = 4,494 KWh = 4.49 MWh

Application: Geardrive

10%

reduction in torque

$5,063

25,398 lbs.

Bearing efficiency increases by 10% (current vs. enhanced)
- Current bearings = 6.6 N-m torque each, Enhanced Bearings = 6.0 N-m torque each
Two tapered roller bearings per shaft x 3 shafts = 6 total bearings
Geardrive driven by an electric motor operating at 1800 RPM
Operational Time of Consideration: 5 years
Customer Location: USA
$0.17 KWh (based on US average)
852.3 lbs CO2 per MWh

Source for calculations: EPA

Calculations
Torque Savings with Enhanced Product = (6 * 6.6 N-m) - (6 * 6.0 N-m) = 3.6 N-m
*Energy Consumption (Q =kNM) =* .105 * 1800 RPM * 3.6 N-m = 680 W = .680 KW
Lifetime Energy Consumption = .680 KW * (24 hrs/day * 365 days/yr * 5 years) = 29,784 KWh = 29.8 MWh

Timken® Tapered Single Spacer Assembly with Direct Mounting (2TS-DM)

Your Challenges

Our Solutions

Benefits

Key Applications

Resources.

Timken Engineering Tools

Where to Buy

Timken^® Tapered Single Spacer Assembly with Direct Mounting (2TS-DM)