Reference new model
YUYAN / Tandem roller
NEW MACHINERY / TANDEM ROLLER
YUYAN BM850 Ride-On Tandem Vibratory Roller
For asphalt and small-road compaction: first review photos and the spec sheet; then request a quotation with configuration, quantity, and destination port.
Representative model · Supplied on request Photos and specifications are for model comparison only; confirm the specific unit, configuration and availability when you request a quotation.
YUYANProduct sheet
PHOTOS & SPECS
PHOTOS & SPECS
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01 / TECHNICAL SPECIFICATIONS
Complete specifications,
listed item by item.
The following preserves the fields, values and units as shown in the technical data; no estimates are made. Different configurations, optional equipment and production batches may vary; the specific purchase is governed by the nameplate, configuration list and the contract’s technical annexes.
Inquire matching configuration ↗01
External dimensions
5 technical fields| Overall machine length (mm)Overall length (mm) | 1550 | |||
|---|---|---|---|---|
| Working width (W) (mm)Working width (mm) | 875 | |||
| Overall height (H) (mm)Overall height (mm) | 1210 | |||
| Steel drum diameter (HI) (mm)Drum diameter (mm) | Front wheel 530 Rear wheel 425 | |||
| Steel drum width (WI) (mm)Drum width (mm) | Front wheel 700 Rear wheel 500 | |||
02
Main parameters
1 technical field| ModelModel | BM850 / BM850C | |||
|---|---|---|---|---|
03
Weight
2 technical fields| Operating weight (kg)Operating weight (kg) | 780 | |||
|---|---|---|---|---|
| Static linear load (N/cm)Static line load (N/cm) | 55 | |||
04
Dimensions
7 technical fields| Working width (mm)Working width (mm) | 875 | |||
|---|---|---|---|---|
| Overall machine length (mm)Overall length (mm) | 1550 | |||
| Overall height (mm)Overall height (mm) | 1210 | |||
| Turning radius (inner, outer) (mm)Turning radius (inner, outer) (mm) | 2300 | |||
| Roller width (mm)Drum width (mm) | Front wheel 700 Rear wheel 500 | |||
| Drum diameter (mm)Drum diameter (mm) | Front wheel 530 Rear wheel 425 | |||
| Wheelbase (mm)Wheelbase (mm) | 1110 | |||
05
Power system
8 technical fields| Engine brandEngine brand | Honda | Changfa | Changchai | Loncin |
|---|---|---|---|---|
| Engine modelEngine model | GX390 | 180F | 178F | 390FD |
| Engine typeEngine type | Four-stroke gasoline engine | Four-stroke diesel engine | Air-cooled four-stroke engine | Four-stroke, air-cooled gasoline engine |
| Number of cylindersNumber of cylinders | 1 | 1 | 1 | 1 |
| Output power (kW)Output power (kW) | 9.7 | 4.8 | 4.4 | 9.7 |
| Rotation speed (rpm)Rotational speed (rpm) | 3600 | 3600 | 3600 | 2400 |
| Electrical system voltage (V)Electrical system voltage (V) | 12 | |||
| Drive methodDrive type | Bi-directional hydraulic chain drive | |||
06
Travel performance
2 technical fields| Travel speed (km/h)Travel speed (km/h) | 0-5 | |||
|---|---|---|---|---|
| Theoretical gradeability (%)Theoretical gradeability (%) | 30 | |||
07
Brake system
1 technical field| Service brakeService brake | Variable piston pump | |||
|---|---|---|---|---|
08
Steering
2 technical fields| Steering modeSteering method | Mechanical steering | |||
|---|---|---|---|---|
| Steering systemSteering system | Rear-wheel steering | |||
09
Vibration system
5 technical fields| Vibratory wheelVibrating drum | Front wheels | |||
|---|---|---|---|---|
| Drive methodDrive type | Mechanical transmission | |||
| Vibration frequency (Hz)Vibration frequency (Hz) | 70 | |||
| Amplitude (mm)Vibration amplitude (mm) | 0.5 | |||
| Exciting force (kN)Exciting force (kN) | 25 | |||
10
Watering/sprinkling system
1 technical field| Spraying modeSprinkling method | Gravity-fed water spray | |||
|---|---|---|---|---|
11
Capacity
3 technical fields| Hydraulic oil tank capacity (L)Hydraulic oil tank capacity (L) | 12 | |||
|---|---|---|---|---|
| Fuel tank capacity (L)Fuel tank capacity (L) | 6.5 | 3.5 | 2.7 | 6.5 |
| Water tank capacity (L)Water tank capacity (L) | 18 | |||
02 / PRODUCT DETAILS
Product features,
clear and concise.
From operating use to key components, learn about the equipment with images and parameters.
Request a quote for this model ↗
YUYAN / Model overview
YUYAN BM850 Ride-On Tandem Vibratory Roller
You should begin selecting a double-drum roller by comparing photos of the jobsite, engine power and operating parameters. This page describes model features; supplied under the YUYAN brand. When requesting a quote, confirm the target configuration, delivery schedule and delivery requirements.
Operating weight780 kg
Vibration force25 kN
Function description and detailed images Equipment features / PRODUCT DETAILS
Product features
- Ergonomically streamlined cab design, wide visibility, attractive appearance
- Equipped with a hydraulic variable pump paired with a fixed-displacement motor; stepless speed control and forward/reverse travel.
- The control panel is fully featured and supports one-button operation.
- Front LED headlights provide illumination for night work
- Air-cooled hydraulic oil cooler for fast heat dissipation and longer service life
Parameters on this page come from YUYAN 2026 product literature; images show prototype illustrations and color or some configurations may vary. Options such as the engine will be confirmed by the configuration list and written quotation.
03 / MATCH & VERIFY
When matching a new machine,
check these points.
After you enquire about a specific machine, verify the documents and delivery conditions in the following order.
- 01
Confirm the target configuration and applicable requirements
Check the intended use, tonnage/load capacity, attachments and destination-country requirements; the model spec sheet does not replace a specific configuration list.
- 02
Verify available condition and factory documents
Request photos, the nameplate or factory documents for the specific machine/batch, and information on actual supply and delivery times.
- 03
Written quotation and delivery point
Specify currency, validity, trade terms, named place and costs included.
