Stehr Spezialmaschinen GmbH

Stehr - Compaction Wheel SVR

The Stehr compaction wheel is your problem solver for a wide variety of compaction jobs.

The Stehr compaction wheel helps you meet or exceed today's demands for constantly better compaction results and less time on the job. Because this compaction wheel is a purely mechanical tool, it requires neither special hydraulic connections nor a separate drive system. It can be attached using quick-coupler devices or directly onto excavators, wheeled loaders, tractors, crawlers and any number of other machines.

HOW IT WORKS
Using the weight of the carrier vehicle, together with the action and properties of the boom and stick, Stehr compaction wheels produce high compaction forces. Problem areas like those encountered in trench and canalization projects, surrounding or along the bottom of pipes and when backfilling along embankments can be easily compacted using this wheel. This is because the wheel produces an extremely high degree of static compaction, which means you can compact large amounts of heap even in highly cohesive soils.

The Stehr compaction wheel delivers tremendous compaction performance, which translates into more cubic meters compacted with better compaction quality for less money.

Stehr - Compaction Wheel SVR

Technical data:

Type: SVR 15 "Mini" SVR 25 "Mini" SVR 28 SVR 40 SVR 60 HD SVR 80 HD

Rollers: with compaction feet with compaction feet with compaction feet with compaction feet with compaction feet with compaction feet

Height to Mounting Plate: 655 mm 655 mm 1090 mm 1090 mm 1090 mm 1090 mm

Overall Wheel Diameter: 610 mm 610 mm 920 mm 920 mm 920 mm 920 mm

Overal Wheel Width: 150 mm 250 mm 280 mm 400 mm 570 mm 770 mm

Carrier Vehicle: 1,5 - 5 t 1,5 - 7 t 6 - 14 t 8 - 16 t 12 - 50 t 18 - 50 t

Number of Rims 1 1 1 1 2 2

Weight: ca. 145 kg ca. 185 kg ca. 500 kg ca. 550 kg ca. 850 kg ca. 940 kg

Line pressure:
up to 200 kg/cm*
(mounted on 1,5-ton excavator)
up to 480 kg/cm*(mounted on 4-ton excavator) up to 300 kg/cm*(mounted on 14-ton excavator) up to 259 kg/cm*(mounted on 16-ton excavator) up to 262 kg/cm*(mounted on 25-ton excavator) up to 198 kg/cm*(mounted on 25-ton excavator)
* Compare these figures with other compaction equipment!

Application Example:

ADVANTAGES OF USNG THE Stehr COMPACTION WHEEL

Its high point pressure per square centimeter produces the quality of compaction you want in the most diverse soil types and conditions. Unlike vibrating rollers, no water is pushed through soil capillaries to the surface during compaction. This is the only method that ensures moisture is distributed uniformly, while delivering consistent and even compaction.

A safer work environment that lets you keep your crews out of the ditch during compaction operations. Optimal compaction of typical problem areas along the sides and bottom of underground pipes.

Stehr compaction wheel - can reach COMPACTION DEPTHS of up to 1200 mm (depending on soil type and moisture)

Ground Pressure (per cm):

Static weight of prime wover plus wheel multiplied by (0,60) and divided by cm² of compaction surface
Examples:
Loader/Backhoe Weight:	8165 kg
Stehr SVR 40 Weight:	500 kg
Active Weight:	8665 kg x 0,60 = 5199 kg
Excavator Weight:	21000 kg
Stehr SVR 60 Weight:	600 kg
Active Weight:	21600 kg x 0,60 = 12960 kg

Superior compaction force compared to other compaction systems:

	Stehr Compaction Wheel	XXX-Vibratory Plate	XXX-Trench Roller
Type:	SVR 60	50 / 55	BW 650
Width:	600 mm	550 mm	650 mm
Weight:	600 kg	392 kg	1250 kg
Force:	Static Force 12960 kg Excavator + SVR 60	Impact Force 5000 kg	Impact Force 5500 kg
	Linear Load: 216 kg/cm	Static Surface Load: 0,16 kg/cm² (original Bomag figures)	Linear Load: 54 kg/cm
	Penetrates, mixes and compacts; no segregation	Just vibration; no penetration or mixing	Just vibration; no pentration or mixing

Four Times the Compaction Force with three times the Performance

Stehr- Always a Great Idea!!!

Features	Benefits
Remarkable roller-rim design is also available with compaction feet	Economical and fast compaction at lifts ranging to 1000 mm
Compatible with all quick-coupler systems	Up to five-times-better compaction performance and quality than plate compactors and trench rollers
Built of high-strength steel	Easier to compact canalization ditches and problem areas such as embankments and backfills
Available in a variety of widths (280, 400, 600 and 800 mm) for almost any conceivable compaction job	Safer, because it keeps workers out of the trench during operations
Best-possible compaction performance in difficult terrain (e.g. cohesive soils)

Stehr-WDH 220 Rotary Drive

Hydraulic swivel drive, unrestricted rotation with self-locking worm drive

oil flow of ca. 50 ltr./min

ca. 9 rpm

Double shock valve ensures proper pressure control

Torque of approximately 8,000 NM

As standard equipment all SVR compaction wheels come with a flange plate having the bore pattern "KRUPP No. 6", as well as the bore pattern for the rotary drive.

Any brand of SW mounting plate is available on request. The rotary drive can be added at any time.