BDR-620
2.3.1.1 Technical information
BDR-620D Unit Value
Length mm 1730
Width (including the side screen) mm 795
Height mm 1191
Weight kg 61
Maximum cutting width cm 62,2
Safe climbing ability
∠
10°
Cutting disk revolutions
40
min
-1
1964
Maximum blade circumferential velocity m.s
-1
64
Travelling speed km.h
-1
2,5 - 3,4
Area capacity
41
m
2
.h
-1
1555-2114
Gearbox oil capacity l (litre) 0,025
Gearbox oil quality
API GL-4 (GL-5)
SAE 90 (80W-90)
Tab. 3: Technical information for BDR-620DEngine information
Engine Unit Value
Type - HONDA GCV-190
Engine displacement cm
3
187
Bore x stroke mm 69 x 50
Max. power/at rpm (HP)
42
kW/min
-1
(HP) 3,8/3600 (5,1)
Max. torque/at rpm
43
N.m/min
-1
11,3/2500
Maximum (set) engine rpm min
-1
3200 ± 100
Fuel consumption l (litre) 1,3 per 3000 rpm
Maximum engine tilt (long period)
∠
20°
Maximum engine tilt (short period
44
)
∠
30°
Fuel tank volume
45
l (litre) 0,91
Fuel (unleaded) petrol okt.č. 91-95
Engine oil filling l (litre) 0,55
Oil quality SAE 15W-40
Ignition plug -
NKG BPR6ES
BRISK LR15YC
Tab. 4: Engine technical information
2.3.2 Description of the machine and its parts
Drum mower BDR-620 (Pict.2) is built on a steel frame, to which all important parts of the machine are attached. All controls (1,2 and 4) are placed
on the handlebars. Handlebars are attached to the frame with a bolted connection (3) and their height is adjustable into 3 positions. Handles (12) secure a
firm grip and machine handling during work. On the left side of the handlebars, there is the wheel drive clutch lever (2) which controls the movement of
the machine in forward direction. On the right side, there is lever (1) of the disc drive clutch for turning the cutting disk drive on (off). Both control levers
return to their original position when the handlebars are released in a critical situation and disconnect the engine power transfer. The cutting disk is
equipped with an automatic brake
46
which stops the disk. Engine speed is controlled with an accelerator lever (4). The wheel drive is controlled by
worm-gear unit with a belt clutch which provides fluent power transfer onto the wheels (15) (the machine does not start with a jump). The gearbox and
clutch are covered by a plastic gearbox cover (16). There is the cutting disk (7) with four steel blades (8) in the front part. The attendant is protected
against flying parts of the cut stand by plastic cover (10 and 9). A detachable side screen (6), which is attached with a bolted connection (5), controls the
line spacing.
40 Actual rpm. of the disc when not cutting, including belt transmission losses.
41 Square meters cut per min./hour will vary, depending on the type of the stand.
42 Measured according to new Society of Automotive Engineers (SAE) J1349 standard
43 Measured according to new Society of Automotive Engineers (SAE) J1349 standard
44 Short period – up to 1 minute.
45 Measured according to new Society of Automotive Engineers (SAE) J1349 standard
46 The automatic break is an active protective feature that supports the machine’s safety.
20
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