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BP-012 · Open differential
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A
A
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D
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F
F
1280
255
E
PLAN SECTION
THROUGH AXLE AND PINION AXES · CROSS PIN IN THE PLANE · SCALE 1:2.5
DETAIL E
CARRIER BEARING · 2:1
VIEW D
FROM ABOVE, CARRIER 14 BROKEN AWAY, RIDING WITH IT · 1:1
1550
PLAN
THE CAR IN A TURN, REAR WHEEL PATHS, BONNET CROPPED · SCALE 1:50
100
200
300
400
0
-4
-8
-12
-16
-20
-24
-28
TIME, s (NOW AT RIGHT)
WHEEL SPEED n, rpm
DIAGRAM 1
SOLID: LEFT WHEEL · DASHED: RIGHT · THIN: CARRIER
ACCENT: THE GAP THE SPIDERS TAKE UP BY SPINNING
11
10
9
7
8
5
6
12
13
1
4
23
24
2
3
14
18
20
22
25
19
17
21
15
16
NOTES
1. CARRIER SPEED IS THE MEAN OF THE WHEELS: ωC = (ωL + ωR)/2.
2. SPIDERS 19 SPIN ON PIN 21 ONLY WHEN ωL ≠ ωR: ωS = (ωL − ωR)/2 × 16/10.
3. TORQUE SPLITS EQUALLY, TL = TR: 351 N·m EACH FROM 180 N·m AT 3.9:1.
4. ONE WHEEL ON ICE (μ 0.1): BOTH GET ONLY μ·N·r = 114 N·m.
5. SHAFTS, PIN, BOLTS, STUDS AND ROLLERS NOT CUT. TUBES SHOWN BROKEN.
ITEM
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DESCRIPTION
AXLE HOUSING, SALISBURY TYPE
REAR COVER 2.5
HEX SCREW M8×20 ISO 4017
AXLE TUBE Ø76×6, END FLANGE
DRIVE PINION 10T, SPIRAL BEVEL
TAPER ROLLER BRG 32307 ISO 355
TAPER ROLLER BRG 30306 ISO 355
COLLAPSIBLE SPACER Ø37×2
SHAFT SEAL 45×72×10 ISO 6194
COMPANION FLANGE Ø110
PINION NUT M24×1.5, COLLAR
CROWN WHEEL 39T, Ø224 PCD
HEX BOLT M12×1.5×30 ISO 8765
DIFFERENTIAL CARRIER
TAPER ROLLER BRG 32010 X ISO 355
SHIM PACK Ø80/Ø64
SIDE GEAR 16T m4.2, 28T SPLINE
THRUST WASHER Ø60/Ø45×0.8
SPIDER GEAR 10T m4.2
SPHERICAL WASHER SR40×1.3
CROSS PIN Ø20×112
SPRING PIN Ø6×32 ISO 8752
HALF-SHAFT Ø30, 28T SPLINE
BALL BEARING 6207-2RS ISO 15
WHEEL STUD M12×1.5×45
MATERIAL
EN-GJS-500-7
DC04
STEEL 8.8
E355 + S355J2
20MnCr5, CASE HARD.
100Cr6
100Cr6
C15E
FKM / DC01
C45
STEEL 10
20MnCr5, CASE HARD.
STEEL 10.9
EN-GJS-600-3
100Cr6
C75S
20MnCr5, CASE HARD.
CuSn8
20MnCr5, CASE HARD.
CuSn8
16MnCr5, CASE HARD.
SPRING STEEL
41Cr4, IND. HARD.
100Cr6
STEEL 10.9
QTY
1
1
10
2
1
1
1
1
1
1
1
1
10
1
2
2
2
2
2
2
1
1
2
2
10
TITLE
OPEN DIFFERENTIAL · REAR AXLE
DWG NO
BP-012
SCALE
1:2.5
SIZE
A2
SHEET
1 / 1
DRAWN
CLAUDE
DATE
2026-10-15
MATERIAL
SEE PARTS LIST
GENERAL TOL.
ISO 2768-m
UNITS
mm · rpm · N·m
LIVE · DRAG THE PLAN SIDEWAYS TO STEER · ↑↓ SPEED · I ICE · S SLOW
Drag the plan view sideways to steer ·
←
→
steer ·
↑
↓
speed ·
I
right wheel on ice ·
S
slow
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