Guede Vertical Rammer GVS 80E - Compactor for confined spaces
The Guede Vertical Rammer GVS 80E is the specialized tool for vertical compaction in confined and hard-to-reach spaces. Unlike horizontal vibratory plates, the vertical rammer achieves compaction depths of 40–65 cm on mixed, granular, and artificial soils (fill, foundations, drainage). With only 680 blows/min but 10 kN of constant pressure, the GVS 80E ensures uniform results on vertical or semi-vertical surfaces, ideal for confined construction sites, precision work, deep sub-foundations, and confined environments where horizontal plates cannot reach. Its low weight (75 kg) and compact foot (340×280 mm) allow for work in corridors, linear trenches, and restricted areas with a single operator. A robust steel frame and reversible starting system guarantee daily reliability on heavy-duty construction sites.
TECHNICAL SPECIFICATIONS
Engine & Power
| Parameter |
Value |
| Engine type |
4-stroke (Otto cycle) |
| Displacement |
196 cm³ |
| Rated power |
4.1 kW (5.5 HP) |
| Ignition |
Spark plug (type: see manual) |
| Fuel |
95 RON unleaded petrol |
| Tank capacity |
2.0 l |
| Run time |
~2–3 h (depends on continuous vibration) |
| Engine oil |
0.6 l (15W-40 or equivalent SAE) |
| Starting system |
Reversible (reverse for extraction) |
Vibration & Vertical Compaction
| Parameter |
Value |
| Vibration frequency |
680 blows/min (low frequency, high penetration) |
| Max compaction pressure |
10 kN (concentrated on narrow foot) |
| Guaranteed compaction depth |
40–65 cm (double that of horizontal plates) |
| Recommended materials |
Mixed soil, granular, gravel, silty sand, artificial fill |
| Noise level (LWA) |
105 dB(A) (slightly quieter than horizontal plates) |
Translation & Vertical Mobility
| Parameter |
Value |
| Movement |
Pure vertical (no horizontal advancement) |
| Descent speed |
10 m/min downhill (operator controls via lever) |
| Foot width |
280 mm |
| Foot length |
340 mm |
| Foot |
Steel, anti-slip surface |
| Handle |
Robust steel frame with double damped handle |
| Braking system |
Emergency stop (see manual) |
Telemetry & Management
| Parameter |
Value |
| Engine protection |
Automatic oil sensor |
| Starting |
Pull starter + reversible for extraction |
| Spark plug ignition |
With key provided |
| Stabilizers |
4 anti-tip side support feet |
| Transport system |
Steel frame, 4 anchoring points for lifting |
| Manuals |
Integrated vertical support (non-removable) |
Dimensions & Logistics
| Parameter |
Value |
| Machine (in operating configuration) |
|
| Length |
740 mm |
| Width |
480 mm |
| Height |
1,020 mm (vertical profile) |
| Packaging (as shipped) |
|
| L × W × H |
770 × 520 × 1,150 mm |
| Net weight |
75 kg |
| Gross weight (with packaging) |
88 kg |
| Volume m³ |
0.455 m³ |
| Goods class |
Non-explosive agricultural/construction machine |
Compliance & Certifications
| Standard |
Status |
| Machinery Directive 2006/42/EC |
✅ Compliant (CE mark visible) |
| CO₂ emissions |
811.46 g/kWh (4-stroke Otto cycle engine) |
| Hand-arm vibration level |
See declaration of conformity (55575_cee.pdf) |
| Construction quality |
Q9 mark (Guede quality) |
| Engine Euro |
Euro 10 (small engine standard) |
STANDARD EQUIPMENT
✅ GVS 80E vertical rammer (base + steel frame)
✅ Double handle frame with vibration dampening
✅ 4 anti-tip side support feet
✅ Pull starter (replaceable)
✅ Reversible system (machine extraction from compacted ground)
✅ Spark plug wrench (included)
✅ 0.6 l engine oil (factory pre-filled)
✅ User and maintenance manual (Italian on request)
✅ CE declaration of conformity (55575_cee.pdf, downloadable)
OPTIONAL ACCESSORIES / ORIGINAL GUEDE SPARE PARTS
Preventive Maintenance
| Code |
Description |
Notes |
| 55575-01058 |
Polyurethane rubber feet (replacement) |
Wear 150–250 working hours |
| 55575-01060 |
Right side stabilizer |
Anti-tip protection |
| 55575-01021 |
Vibration shaft eccentric |
Core wear part, 400 h interval |
| 55575-01046 |
Vibration system pulley |
Slipping on demand |
| 55575-01034 |
Engine drive belt |
Main transmission |
Repairs & Restorations
| Code |
Description |
Compatibility |
| 55577-01031 |
Engine pulley |
Replace if damaged |
| 55574-01103 |
Exhaust muffler |
Complete replacement with gasket |
| 55574-01100 |
Valve cover |
Engine oil check |
| 55575-01018 |
Right vibration cover |
Lubrication access |
| 55575-01045 |
Left vibration cover |
Bearing access |
| 55575-01001 |
Main handle (replacement) |
Wear or impact breakage |
| 55575-01059 |
Accelerator lever + cable |
Handle cable breakage |
Improvements & Upgrades
| Code |
Description |
When |
| 55575-01028 |
Engine protective shield |
Humid/sandy environments |
| 55575-01062 |
Foot fixing bracket |
Quick assembly/disassembly |
PROFESSIONAL APPLICATIONS
1. Deep Foundation Compaction (40–65 cm)
-
Use: Preparation of sub-foundations for buildings, industrial structures, swimming pools
-
Advantage: Certified depth reached 40–65 cm, on mixed/artificial ground
-
Frequency: 680 blows/min for uniform penetration without rebound
-
Control: Operator feels continuous tactile feedback (damped handles)
2. Linear Excavations & Trenching (Drainage, Pipelines)
-
Use: Compaction of excavation edges, perimeter drainage, channeling
-
Foot: 280×340 mm accesses narrow spaces (50 cm corridors, 45 cm channels)
-
Depth: 40–65 cm on silty sand, fine gravel
-
Speed: Controlled descent 10 m/min, operator adjusts pressure via lever
3. Work in Confined & Difficult Spaces
-
Use: Basements, underpasses, pits, artificial caves
-
Protection: Anti-tip frame with 4 side feet (1:3 stability)
-
Mobility: Profile height 1,020 mm accesses standard doors (80 cm), can be lifted by one person
-
Safety: Reversible system extracts machine from blocked ground
4. Density Control & Geotechnical Tests
-
Use: Public construction sites with modified Proctor certifications
-
Frequency: 680 blows/min for uniform 10–15 cm layers
-
Traceability: Documentation with CE declaration of conformity
-
Interface: Compatible with Dynaflex dynamic penetrometers (post-compaction test)
DIFFERENCES VS. HORIZONTAL VIBRATORY PLATES
| Parameter |
GRP 80E Plate |
GVS 80E Rammer |
When to use GVS |
| Blows/min |
5,000 |
680 |
Dense soils, depth > 40 cm |
| Depth |
20 cm |
40–65 cm |
Foundations, deep excavations |
| Pressure |
14 kN |
10 kN (concentrated) |
Vertical surfaces, confined spaces |
| Foot |
420×520 mm |
280×340 mm |
Corridors, trenching, drainage |
| Movement |
Horizontal (auto) |
Pure vertical |
Manual work, no travel |
| Noise |
108 dB(A) |
105 dB(A) |
Densely populated areas (- 3 dB) |
| Weight |
70 kg |
75 kg |
Single operator with support |
| Typical use |
Paving, tiling |
Deep foundations, drainage |
Geotechnical/heavy construction |
FREQUENTLY ASKED QUESTIONS (FAQ)
What is the difference between the "depth" of the GVS 80E (40–65 cm) and that of the GRP 80E plate (20 cm)?
The GVS 80E compacts vertically in successive layers: each pass penetrates 5–8 cm. By repeating 6–8 passes, you achieve 40–65 cm of total compaction. The GRP 80E compacts superficially (20 cm) in a single horizontal pass. For foundations, the GVS is superior.
Can I use the vertical rammer on asphalt?
Not recommended. Hot/rigid asphalt does not benefit from vertical vibration. The GVS is designed for granular, sandy, mixed soils, not bituminous materials. For asphalt, use the GRP 80E horizontal plate.
How does the "reversible system" of the GVS 80E work?
If the rammer gets stuck in compacted soil, activate the reverse start. The engine reverses rotation, and the foot extracts from the ground. It is not a reverse movement, but an emergency vertical extraction.
How much maintenance does it require between jobs?
Every 20 h: oil check, air filter cleaning. Every 50 h: complete engine oil change, bearing lubrication. Every 100 h: spark plug replacement, rubber foot inspection. Always use fresh petrol (not > 3 months stored).
Do the rubber feet wear out? Are they included?
Yes, they wear out. Durability: 150–250 working hours (depends on granulometry and humidity). Replacement: code 55575-01058. They are included in the standard equipment but replaceable in 5 minutes.
Noise: Is 105 dB(A) compatible with residential areas?
Yes, slightly quieter than the GRP 80E (108 dB). However, it is as noisy as a construction site. In residential areas, limit use to 08:00–17:00 Mon–Fri (check local ordinances). Provide 95 dB SNR headphones to operators.
Can I lift the vertical rammer with a crane?
Yes. The frame has 4 certified anchoring points (see manual) for horizontal lifting up to 2 t. However, net weight is 75 kg: manual transport with 2 people is better.
Warranty on mechanical damage (stuck feet, forced engine)?
Standard Guede warranty: 24 months from purchase (manufacturing defects). Exclusions: lack of oil maintenance, fuel stored > 6 months, forced engine during blocked extraction, water immersion. Contact Krollit within 30 days of purchase for claims.
What is the tactile feedback during compaction?
The vibration is transmitted directly to the handles (damped for comfort). The operator feels the intensity of the blows and adjusts pressure by slowly lifting/lowering. There is no real-time numerical data: it is manual work based on experience.
Do I need to register the vertical rammer somewhere?
No. It is not registered (no license plate). Documentation: manual + CE declaration provided. For public construction sites, request DURC + CCIAA registration (concerns the company). Keep the Krollit invoice for warranty and assistance.
