RV in job site

1.What RV's provide you in job sites!
“Comfortable Handle”
Heavy duty, unique, doughnut-style isolators to prevent harmful vibrations to the operator
•Height-adjustable 3-position handle for comfort and productivity
•Lifting stop to prevent stretching throttle and fuel lines
•Center-mounted throttle lever for convenience and safety contol
“Easy & Stable Operattion”
Lower center of gravity gives extremely stable and balanced operation.
“Optimum Compaction Force”
•Measured impact force(CIMA)
•Excellent impact to weight ratio for maximum productivity
“HONDA 4-cycle engine”
HONDA engine(EPA approved)easy starting, quiet and reliable Engine guard Fuel/engine on/off switch
“Easy Portability”
•Weight, Size, Low center of gravity •Handle rollers for easy loading

2.Evaluation of Compaction Tests
2-1.Testing facilities in technical laboratory
All models of Rammers, Plate Compactors, and Rollers have been tested as shown in Photos 3 and 4. The compaction performance and outputs, e.g. density, pressure, sinkage, etc. are measured and qualified before they ever leave the factory to give you compaction equipment that is ready to work.
Photo 3. Soil compaction tests	Photo 4. Sand replacement density test
2-2.Test results of compaction
In Figre 1, the relationship between the number of passes and degree of compaction is shown. Density increases with an increase of mass and number of passes of the machine, until the maximum density is reached. Soil conditions used during testing are as follows: maximum dry density was 1.63 t/yd3 at optimum moisture content of 12.4%, and initial lift was 11.8".
2-3.Impact force (CIMA)
Impact forces were measured by CIMA standards, which are shown in Figure 2. The RV impact forces are stronger than competitors' models, We achieve higher impact forces at a fraction of the amplitude of our competitors. Our low, center of gravity offers stable and balanced performance with consistently higher results.
Fig.1 Relationship between number of passes and degree of compaction	Fig.2 Impact force (CIMA)

3.Compaction output

3-1.Number of passes required

The number of passes to reach to the required density for both soil and HMA(Hot Mix Asphalt) are estimated in Table 1, based on the test results of compaction described above.

Table 1. The number of passes required or both soil and HMA

		RV50,60	RV70,80
Soil	t =10in	6	4
HMA	t =1in	4	3
	t =2in	5	3
	t =3in	5	4

3-2.Compaction output

3-2-1.Formula of compaction output

Compaction output for RVs is given by the following formula:

3-2-2.Soils

Compaction outputs for soils are indicated in Table 2. Three kind of soils- gravel/sand, mixed soil and sandy silt/loam are classified.

Table 2. Compaction output of soils

MODEL	Gravel/sand			Mixed soil			Sandy silt/loam
	Thickness(in)	Output per hour		Thickness(in)	Output per hour		Thickness(in)	Output per hour
		(ft2/h)	(yd3/h)		(ft2/h)	(yd3/h)		(ft2/h)	(yd3/h)
RV50	12	164-312	6-11	10	164-312	5-10	8	164-312	4-8
RV60	12	180-344	7-13	10	180-344	6-10	8	180-344	4-9
RV70	16	295-562	15-28	12	295-562	11-23	10	295-562	9-18
RV80	16	320-609	16-30	12	320-609	12-20	10	320-609	10-19

3-2-3.HMA (Hot Mix Asphalt)

Compaction outputs for HMA (Hot Mix Asphalt) is indicated in Table 3. HMA is dense-graded mixtures with straight binder, whose maximum aggregate size is 1/2".

Table 3. Compactive output for HMA                                    (t/h)

MODEL	ft2/h	1 in	2 in	3 in
RV50	157-374	1.2-2.3	1.9-3.6	2.8-6.3
RV60	173-412	1.3-2.4	2.1-3.9	3.1-6.0
RV70	236-599	1.9-3.6	3.0-5.7	4.5-8.6
RV80	256-650	2.0-3.9	3.3-6.2	4.9-9.3

Density of the compacted HMA;1.94 t/yd³

4.General Specifications

Specifications are subject to change without notice.

MODEL		RV50	RV60	RV70	RV80
WEIGHT	lbs(kg)	112(50)	132(60)	154(70)	178(80)
DIMENSIOMS
Overall length	in(mm)	26"(650)	28"(700)
Overall width	in(mm)	14"(360)
Overall height	in(mm)	37"(940)		37"(945)
PERFORMANCE
Tamping shoe (L/W)	in(mm)	14"/10" (345/260)	14"/11" (345/280)	14"/12" (345/300)	14"/13" (345/30)
Tamping stroke	in(mm)	2.4(61)	3.15(80)	3.15(80)	3.15(80)
Tamping frequency	Hz(vpm)	11-11.3(660-680)
Impact blow	lbs(kN)	2,700(12)	3,370(14)	3,930(16.9)	4,500(20.1)
Working speed	ft/min (m/min)	26.3-50.0(8-15)
Productivity	ft2/h (m2/h)	2,500(229)	2,750(252)	3,000(275)	3,250(298)
Max compaction depth	in(mm)	20(508)	23(584)	24(610)	26(660)
ENGINE
Model		HONDA GX100	HONDA GX120K1
Max. output	HP(kW)	2.5(1.9)	4.0(3.0)
Max. operating RPM		3,900	3,680
Fuel		Un-leaded gasoline
Starting system		Recoil starter
LUBRICATION
Type		Automatic circulation
Oil capacity	gal(L)	0.09(0.35)	0.11(0.40)
Fuel tank capacity	gal(L)	0.58(2.2)

5.Guidelines for choosing the right equipment

♦♦ = Well suited     ♦ = Suited

Field application		Rammers	Vibratory plates (Plate compactors)		Walk behind vibratory roller (Tandem)
			Single	Reversible
		112-176 lb	66-190 lb	784 lb	1,120-2,240 lb
Rock and Soil Compaction
Materials	Rock
	Gravel	♦
	Gravel, sand, mixed	♦♦	♦♦	♦♦	♦♦
	Sand, silt, gravel mixed	♦	♦	♦♦	♦
	Sandy silt	♦
	Loam, silt mixed
Road		♦♦	♦	♦	♦♦
Railways		♦		♦	♦
Airports				♦
Dams, landfills		♦		♦	♦
Landscaping		♦♦	♦♦	♦♦	♦
Industrial yards		♦♦	♦	♦♦	♦♦
Backfill, foundations		♦♦	♦	♦	♦
Sidewalks, bike paths, driveways		♦♦	♦		♦♦
Trenches		♦♦		♦♦	♦
Small openings and narrow trenches		♦♦		♦♦	♦
Playing and recreation grounds		♦♦	♦	♦♦	♦♦
Hot mix asphalt compaction
H M A	Base coarse		♦	♦	♦
	Binder coarse	♦	♦	♦	♦♦
	Surface coarse	♦	♦♦	♦♦	♦♦
Airports				♦	♦
Sidewalks and bike paths			♦		♦♦
Driveways			♦	♦	♦♦
Parking lost and industrial yards		♦♦	♦♦	♦♦	♦♦
Small repair jobs		♦♦	♦♦	♦♦	♦♦
Maintenance work		♦♦	♦	♦♦	♦♦
Cement concrete
Concrete		♦
Cement-treated road base		♦♦	♦	♦♦	♦
Interlock, brick, pavers
Concrete blocks			♦	♦♦	♦

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Copyright(c)2001 SAKAI HEAVY INDUSTRIES, LTD. All Rights Reserved.
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