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Holms eSL – Prototype

Holms eSL is our Holms Angle Sweeper SL but electric

SAS, Self Adjusting Suspension
Correct ground pressure with minial adjustments. Follows the slopes and irregularities of the ground
Electric motor
Splash guard
Led lighting
Two different brush cores. Swish (optional) or Beeline Ring brush (Standard).
The attachment in the picture is equipped with Beeline.
Electric linear device for turning
Parking support

Proposed Technical Specification

Model	SL 200	SL 220	SL 250	SL 280
Working width	2,00 m	2,20 m	2,50 m	2,80 m
Weight, excl. bracket	390 kg	410 kg	430 kg	450 kg
Weight, excl. bracket, w/ full w.tank 106 / 159 US gal	952 kg / 1196 kg	972 kg / 1216 kg	1002 kg / 1236 kg	1022 kg / 1256 kg
Brush diameter	0,7 m	0,7 m	0,7 m	0,7 m
Recommended oil flow l/min	40/130	40/130	40/130	40/130

Model	SL 200	SL 220	SL 250	SL 280
Working width	6'7"	7'3"	8'2"	9'2"
Working width, fully angled/ 30 °	5'7"	6'3"	7'3"	7'10"
Weight, standard design	859 lb	903 lb	947 lb	992 lb
Weight, excl. bracket, w/ full w.tank 106	2099 lb	2143 lb	2209 lb	2253 lb
Brush diameter	28"	28"	28"	28"

Holms eSL Electric Sweeper

+30 % machine battery runtime

Holms eSL - A part of the solution

PROTOTYPE

The Holms eSL Electric Sweeper is being developed for the electric equipment needs
of the near future. Holms eSL Electric Sweeper will optimize the working time of your electric machine so you can complete more tasks between charging periods.

Proof of Concept - The numbers; Machine and sweeper types

Diesel power and hydraulic sweeper

Needed power of sweeper: 4kW / 5.4hp

Efficiency transfer of hydraulic system is 50 %
Needed power on hydraulic pump: 8kW / 10.9hp

Efficiency transfer of diesel engine is 40%, needed power in the diesel: 20kW / 27hp

Diesel additional consumption w sweepers .52gal/hr

US Cost for diesel $5.00

US Cost wth sweeper $2.60/h

1 gal diesel equals 22.38 pounds CO2

Emissions: 11.64 pounds/hr CO2

Electric power and hydraulic sweeper

Needed power of sweeper: 4kW / 5.4hp

Efficiency transfer of hydraulic system is 50 %, needed power on hydraulic pump: 8kW / 10.9 hp

Efficiency in electric systems is 98 %, needed power from the batteries: 8,2kW / 11.1 hp

US Cost for electric energy: $0.17/kWh

US Cost: 8,2 kWh x $0.17/kWh = $1.40/h

Emissions: Zero emission

Advantages:
Lower operating cost,
Emissions: Zero emission

Electric power and Holms eSL sweeper

Needed power of sweeper: 4kW / 5.4hp

Efficiency in electric systems is 98 %, needed power from the batteries: 4,1kW (50% lower)

US Cost for electric energy: $0.17/kWh

US Cost: 4.1kWh $0.17/kWh = $0.70/h

Emissions: Zero emission

Advantages:
Furter operating cost reduction;
Emissions: Zero emission

Preparing for tomorrow´s demands now.

Complete electromobility solutions for the equipment industry are the goal

Equipment users worldwide are evaluating electric powered machines and employing them in applications where the greatest benefits are realized.
Holm´s developement of an electric sweeper is driven by the need to extend battery life on the carrier machines themselves to
support the working hours desired by equipment users.

- Electrification of equipment is more than a trend and as the technology find its way beyond the early adopter stage
customers will need compatible attachment solutions,
says Dan Snedecor, President at Holms Attachments, INC.

The Holms eSL220 Angle Sweeper will be part of Volvo Construction Equipment´s electromobility exhibit confirming the joint commitment to providing complete electrified solutions to the market. The Holms concept sweeper that will be on display is a working prototype that has been tested and evaluated over the last 12 months by the developement apartement at Holms Attachments.

- Converting electric power to traditional hydraulic power, used by today´s attachments, results in large losses.
Using electric power provided by the carrier machine increases overall working time due to a more efficient use of the available power.
Our eSL220 Angle Sweeper provides longer working times that a traditional hydraulic powered sweeper,
says Ulf Osterberg, Director of product design at Holms Attachments AB.

- Our focus is to be prepared, along with our partners. to provide innovative products that support lower emissions and are of the highest quality, says Carl Gindahl, CEO of Holms Attachments.

Sweeping and Snow Attachments

Holms Attachments have many different sweepers for different types of needs. We design and manufacture sweepers that can be used during the whole year. Our snow plows are of the highest quality and comes in different sizes. We have V-plows, flared V-plows and diagonal plows. Our attachments are made for snow clearing and sweeping. They can be mounted on tractors, wheelloaders and excavators.