Hitachi D10YB Manual

POWER TOOLS
TECHNICAL DATA
AND
SERVICE MANUAL
ANGLE DRILL
D 10YB
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LIST No. 0193 Jun. 2000
D
MODEL
D 10YB

Page
CONTENTS
1. PRODUCT NAME •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1
2. MARKETING OBJECTIVE ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1
3. APPLICATIONS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1
4. SELLING POINTS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• • 1
4-1. Selling Point Descriptions ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 2
5. SPECIFICATIONS •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 3
6. COMPARISONS WITH SIMILAR PRODUCTS ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 4
6-1. Specification Comparisons •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 4
6-2. Drilling Speed Comparisons •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 5
7. PRECAUTIONS IN SALES PROMOTION ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 6
7-1. Handling Instructions •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 6
7-2. Caution on Name Plate •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 6
8. PRECAUTIONS IN DISASSEMBLYAND REASSEMBLY•••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7
8-1. Disassembly ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 7
8-2. Reassembly •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• •10
8-3. Wiring Diagram and Internal Wire Arrangement •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 12
8-4. Lubrication ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 15
8-5. Tightening Torque ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 15
8-6. Insulation Tests ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 15
8-7. No-load Current Value ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 15
9. STANDARD REPAIR TIME (UNIT) SCHEDULES •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 16
Assembly Diagram for D 10YB ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 17
Notice for use
Specifications and parts are subject to change for improvement.
Refer to Hitachi Power Tool Technical News for further information.

--- 1 ---
1. PRODUCT NAME
Hitachi Angle Drill, Model D 10YB
2. MARKETING OBJECTIVE
The Model D 10YB has been developed based on the current Model D 10YA (10 mm) to meet the market demand
for an angle drill with a forward/reverse changeover switch, a small-diameter housing, and a small head.
The key features of the Model D 10YB are as follows.
(1) Easy-to-grip small-diameter housing
(2) Forward/reverse changeover switch
(3) Small head
(4) Powerful 500 W motor
(5) Fast drilling speed
With the introduction of the Model D 10YB, we aim to make the angle drill series more competitive and to expand
the market share.
3. APPLICATIONS
Drilling in metal, wood and plastics
4. SELLING POINTS
Lightweight 1.5 kg (3.3 lbs.)
Slide switch located in a convenient position
* Subject to change by area.
Forward/reverse changeover switch
Easy-to-grip small-diameter housing
Smallest head in this class
(83 mm (3-1/4"))
Powerful 500 W motor* (class leader)

--- 2 ---
Maker •Model
Item
Steel mm
Wood mm
Power consumption W
4-1. Selling Point Descriptions
4-1-1. Easy-to-grip small-diameter housing
As in the case of disc grinders, a small-diameter housing makes it easy to grip and improves operability.
The slide switch located on the lower portion of the housing can be operated while gripping the tool.
4-1-2. Forward/reverse changeover switch
The Model D 10YB is equipped with a forward/reverse changeover switch. This switch expands the application
range to such tasks as loosening screws and locked drill bits.
4-1-3. Smallest head in this class
The Model D 10YB has the smallest head (head height (h) 83 mm, center height (L) 22.5 mm) in this class for
efficient drilling in confined spaces.
4-1-4. Powerful 500 W motor
Thanks to the powerful 500 W motor, the maximum drilling capacity in wood is increased to 22 mm dia.
The Model D 10YB can be used for a wider range of drilling work.
Maker •Model
Item
h (Head height) mm
L (Center height) mm
Hitachi
D 10YB D 10YA
83 (3-1/4")
22.5 (7/8")
96 (3-3/4")
23 (15/16")
88 (3-1/2") 87 (3-3/8")
23 (15/16") 25 (1")
BC
Hitachi
D 10YB D 10YA
10 (3/8")
22 (7/8")
10 (3/8")
15 (5/8")
10 (3/8") 10 (3/8")
22 (7/8") 15 (5/8")
BC
Drilling
capacity
500 (0.67 HP) 400 (0.54 HP) 400 (0.54 HP) 300 (0.40 HP)
L
h

--- 3 ---
5. SPECIFICATIONS
Aluminum alloy die casting
Capacity
Drill chuck
Power source
Voltage, current and
power input
Type of motor
Enclosure
Insulation structure
Type of switch
Speed
Full-load output
Weight
Packaging
Cord
Standard accessories
Steel: 10 mm (3/8")
Wood: 22 mm (7/8")
Mount type: 3/8"-24UNF
Chuck: 10 TLRD
Capacity: 1.5 to 10 mm (1/16" to 3/8")
AC single phase 50/60 Hz
Single-phase series commutator motor
Housing
Tail cover
Inner cover
Double insulation
Slide switch
No-load speed: 2,300/min.
Full-load speed: 1,820/min.
Net: 1.5 kg (3.3 lbs.)*
Packaged: 2.0 kg (4.4 lbs.)
Corrugated cardboard box
Type: 2-core cabtire cord
Nominal sectional area: 0.75 mm2
Length: 2.5 m (8.2 ft.)
Side handle ••••••••••••••••••••••••••••• 1
Chuck handle •••••••••••••••••••••••••••• 1
250 W (0.34 HP)
Voltage (V) Current (A) Power input (W)
110 4.8
115 4.6
220
230
240 2.2
2.3 500
(0.67 HP)
* Net weight excludes cord.
Gear cover
Chuck cover
Polyamide resin

--- 4 ---
Item
Steel
Wood
Drill chuck capacity
Input
No-load rotation speed
Weight**
Full-load rotation speed
Full-load output
Max. output
Max. torque
No-load sound pressure level
Side handle
Cord
Length x Width
Dimensions Head height
Center height
mm
mm
mm
W
/min.
kg
/min.
W
W
N•m
dB(A)
m
mm
mm
mm
6. COMPARISONS WITH SIMILAR PRODUCTS
6-1. Specification Comparisons
Model
Catalog specifications
D 10YB
10 (3/8")
22 (7/8")
10 (3/8")
500* (0.67HP)
500 to 2,300
1.5 (3.3 lbs.)
1,650
250 (0.34 HP)
490 (0.66 HP)
12
78
Equipped
2.5 (8.2 ft.)
290 x 74
(11-7/16" x 2-29/32")
83 (3-1/4")
22.5 (7/8")
D 10YA
10 (3/8")
15 (5/8")
10 (3/8")
400 (0.54HP)
300 to 2,300
1.7 (3.8 lbs.)
1,700
230 (0.31 HP)
460 (0.62 HP)
11
78
Equipped
2.5 (8.2 ft.)
268 x 78
(10-9/16" x 3-1/16")
96 (3-3/4")
23 (15/16")
10 (3/8")
15 (5/8")
10 (3/8")
300 (0.40HP)
0 to 1,400
1.6 (3.5 lbs.)
1,130
120 (0.16 HP)
250 (0.34 HP)
10
83
None
2.0 (6.6 ft.)
270 x 76
(10-5/8" x 3")
87 (3-3/8")
25 (1")
10 (3/8")
22 (7/8")
10 (3/8")
400 (0.54HP)
0 to 1,100
1.6 (3.5 lbs.)
950
120 (0.16 HP)
260 (0.35 HP)
10
81
None
2.5 (8.2 ft.)
290 x 59
(11-7/16" x 2-5/16")
88 (3-1/2")
23 (15/16")
Characteristics
Structural features
BC
Hitachi
* Power input is subject to change by areas.
** Weight excludes cord.
Capacity

--- 5 ---
6-2. Drilling Speed Comparisons
The figures below show the drilling speed of the Model D 10YB compared with the competitors' existing models.
(1) Drilling in steel
Model name
(2) Drilling in wood
6.5 mm dia.
10 mm dia.
D 10YB
Hitachi D 10YA
Hitachi BC
30
25
20
15
10
5
0
Drilling speed (mm/min.)
15 mm dia.
22 mm dia. *
D 10YB
Hitachi D 10YA
Hitachi BC
2,500
2,000
1,500
1,000
500
0
Drilling speed (mm/min.)
Model name
* Note that 22 mm dia.
drilling is more than the
maximum capacity of
the Model D 10YAand
C.

--- 6 ---
7. PRECAUTIONS IN SALES PROMOTION
In the interest of promoting the safest and most efficient use of the Model D 10YBAngle Drill by all of our
customers, it is very important that at the time of sale the salesperson carefully ensures that the buyer seriously
recognizes the importance of the contents of the Handling Instructions, and fully understands the meaning of the
precautions listed on the Name Plate attached to each tool.
7-1. Handling Instructions
Although every effort is made in each step of design, manufacture and inspection to provide protection against
safety hazards, the dangers inherent in the use of any electric power tool cannot be completely eliminated.
Accordingly, general precautions and suggestions for the use of electric power tools, and specific precautions
and suggestions for the use of the Angle Drills are listed in the Handling Instructions to enhance the safe, efficient
use of the tool by the customer. Salespersons must be thoroughly familiar with the contents of the Handling
Instructions to be able to offer appropriate guidance to the customer during sales promotion.
7-2. Caution on Name Plate
Each Model D 10YB unit is provided with a Caution Plate (illustrated below) which lists basic safety precautions
for its use. Carefully ensure that the customer fully understands and follows these precautions before using the
tool.
(1) For Australia, New Zealand and China
(2) For the U.S.A. and Canada

--- 7 ---
(Note) When the drill chuck cannot be removed by tapping:
Remove the four Tapping Screws D5 x 40 [1] and the pinion ass'y (assembly of the First Gear [5], Ball Bearing
[3] and the Second Pinion [4]).
Remove the four Seal Lock Hex. Socket Hd. Bolts M3 x 12 [22] and tap the Gear Cover [2] strongly with a
wooden hammer to remove the Chuck Cover [21], Spindle [19] and others together (See Fig. 2). At this time,
be sure to tap on the two screw holes, not the center of the Gear Cover [2]. Otherwise, the Gear Cover [2] may
be deformed.
Secure the J-309 tool in a vise. Insert the pin of the J-309 tool into the hole at the rear of the Gear [20] and
loosen the Drill Chuck 10TLRD [25]. When it is difficult to loosen the Drill Chuck 10TLRD [25] with a hex. bar
wrench, use another tool such as a pipe to lengthen the handle and increase leverage (See Fig. 3).
8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
The [Bold] numbers in the descriptions below correspond to the item numbers in the parts list and exploded
assembly diagram.
8.1 Disassembly
(1) Replacement of the drill chuck
(a) Insert the Chuck Handle 10TLRD [26] into the Drill Chuck 10TLRD [25] until the Drill Chuck 10TLRD [25] is
secured to the Chuck Cover [21] (See Fig. 1). To avoid damage to the Chuck Cover [21], put a cloth between
the Chuck Cover [21] and the Chuck Handle 10TLRD [26].
(b) Insert a flat-blade screwdriver into the Drill Chuck 10TLRD [25] and remove the Flat Hd. Screw (Left Hand)
M5 x 15 [27].
(c) The Drill Chuck 10TLRD [25] is secured to the Spindle [19] with screws. Insert the Chuck Handle 10TLRD
[26] into the Drill Chuck 10TLRD [25] and strongly tap it with a wooden hammer counterclockwise viewing
from the Drill Chuck 10TLRD [25] side. Then the Drill Chuck 10TLRD [25] can be removed.
Fig. 1
Put a cloth to avoid damage to the chuck cover.
Drill Chuck 10TLRD [25]
Flat Hd. Screw (Left Hand) M5 x 15 [27]
Chuck Handle 10TLRD [26]

--- 8 ---
(2) Disassembly of the spindle section
(a) Remove the four Seal Lock Hex. Socket Hd. Botls M3 x 12 [22] and remove the Chuck Cover [21].
(b) Remove the four Tapping Screws D5 x 40 [1] from the Gear Cover [2] and remove the Gear Cover [2] from the
Inner Cover [8]. At this time, the pinion ass'y (assembly of the Ball Bearing [3], Second Pinion [4] and First
Gear [5]) can be removed. If the pinion ass'y remains in the Inner Cover [8], tap the end surface of the Inner
Cover [8], and the pinion ass'y can be removed.
(c) Tap the flush surfaces of the Gear Cover [2] and the Inner Cover [8] with a wooden hammer. Then the pinion
ass'y (assembly of the Ball Bearing [3], Second Pinion [4] and First Gear [5]) can be removed from the Gear
Cover [2] with the First Gear [5] and the Ball Bearing [3] press-fitted.
(d) Use the J-310 tool for disassembly of the Spindle [19] because the Spindle [19] is press-fitted to the Ball
Bearing [18] which is secured to the Gear Cover [2] with the two Flat Fillister Hd. Screws M4 x 10 [17].
Set up the J-310 tool as shown in Fig. 4 and then pull out the Spindle [19] by turning the sleeve clockwise with
a wrench.
(e) Place the Gear [20] on a cylindrical jig and press down on the Spindle [19] to remove the Gear [20] from the
Spindle [19] (See Fig. 5).
(f) Remove the Flat Fillister Hd. Screw M4 x 10 [17] from the Ball Bearing [18] and tap the Gear Cover [2] with a
wooden hammer. Then, the Ball Bearing [18] can be removed.
Fig. 4
Sleeve nut (J-310)
Flat Fillister Hd. Screw M4 x 10 [17]
Ball Bearing [18]
Holder plate (J-310)
Sleeve (J-136)
Spindle [19]
Left-hand screw
Gear Cover [2]
22 mm wrench
Gear Cover [2]
Gear [20]
Secure two pins of the
J-309 tool into the holes
at the rear of the gear.
Hex. bar wrench
Pin (J-309)
Fig. 2 Fig. 3
Tap on these two holes
from the bottom.
Drill Chuck 10TLRD [25]
J-309 tool
Secured to the vise.
Gear [20]