Linkage
The Three-Point Hitch System Many of the products described in this catalog are components of the typical tractor three-point hitch system that is standard on almost all farm tractors today. See illustration below. The basic function of the system is the attachment and adjustment of agricultural implements. The three primary part of the system are the top link and two lower lift arms as shown in yellow and red in illustration.
Special pins are used to fasten the implement at these three points: top link pins and draw pins (lift arm pins). Adjustment of one or all of these component allows the tractor operator to raise, lower or tilt an implement. The three-point linkage parts described in this catalog are built to standard specifications set by the American Society of Agricultural Engineers (ASAE).
The three primary parts of the 3 point hitch system are top link and two lower lift arms
TOP LINE PIN
TOP LINE
POWER TAKE OFF SHAFT
LIFT ARM LEVELING ASSEMBLY
ADJUSTABLE STABILIZER ARM
LIFT ARM
LIFT ARM LEVELING ASSEMBLY
LIFT ARM
DRAWBAR
Top Link Connection Top link pins are always unthreaded and are held in place by either a lynch pin, or in some cases, a large “R” dip pin. Top links and top link pins vary in length, but their respective ball socket holes and pin diameters are standardized by horsepower Category. Lift Arm Connection Most lift arm pins are threaded on the end that bolts to the implement bracket. The unthreaded end with the cross hold accommodates the ball socket of the lift arm. The lift arm is secured on the pin with a lynch pin or large “R” dip in. Lift arms and lift arm pins vary in length, but their respective ball socket holes and pin diameters are standardized by horsepower Category.
MAXIMUM DRAWBAR HORSEPOWER
TOP LINK PIN DIAMETER
PULL OR DRAW PIN DIAMETER
STANDARD LIFT ARM SPACING
Category 0 - up to 20
1.5875 cm
1.5875 cm
50.8 cm
Category 1 - up to 45
1.905 cm
2.2225 cm
66.04 cm
Category 2 - 40 to 100
2.54 cm
2.8575 cm
81.28 cm
Category 3 - a80 to 225
3.175 cm
3.65125 cm
96.52 cm
Category 4 - 135 to 300
4.445 cm
5.08 cm
116.84 cm
Category 0, 1, 2, 3 and 4 are used to classify tractors by drawbar horsepower. The table shows the dimensions and the horsepower ratings that are associated with these five categories.
Forged Head & Zinc Plated Hitch Pins with Swivel Handle
Features Forged-head hitch pin with swivel handle Zinc Plated “R” clip pin or chain and 1/4” lynch pin More than 25% stronger than Grade 2 Yellow zinc dichromate Plated
7 3/4 in
7 3/4 in
6 1/4 in
6 1/4 in
125 700HPC
125 700HP
With Clip
With Chain
3/4 in
3/4 in
Pin Diam. 1.91 cm 2.22 cm 1.59 cm
Usable Length 15.86 cm 15.86 cm
Overall Length 19.70 cm
Pin Diam. 1.91 cm 2.22 cm 1.59 cm
Usable Length 15.88 cm 15.88 cm
Overall Length 19.69 cm
Part #
Weight
List
Part #
Weight
List
125 700HPC 125 701HPC 125 702HPC 125 703HPC 125 704HPC 125 705HPC 125 706HPC 125 707HPC 125 708HPC 125 709HPC 125 712HPC 125 714HPC 125 715HPC
0.52 kg
$7 C $7 C
125 700HP 125 701HP 125 702HP 125 703HP 125 704HP 125 705HP 125 706HP 125 707HP 125 708HP 125 709HP 125 712HP 125 730HP
0.54 kg
$7 C
19.70 cm 0.68 kg
19.69 cm 0.70 kg
$10 C
10.80 cm 14.61 cm 0.27 kg
$poa C
10.80 cm 14.61 cm 0.34 kg
$2 C $5 C
1.91 cm 10.80 cm 14.61 cm 0.38 kg
$7 C
1.91 cm 10.80 cm 14.61 cm 0.43 kg
1.59 cm 15.90 cm
19.69 cm 0.38 kg
$poa C $poa C
1.59 cm 15.86 cm
19.69 cm 0.40 kg
$poa C
1.27 cm 10.80 cm 14.61 cm 0.18 kg
1.27 cm 10.80 cm 14.61 cm 0.22 kg
$2 C
2.54 cm 15.90 cm
19.69 cm 0.86 kg 19.69 cm 1.08 kg 19.69 cm 1.33 kg
$10 C
2.54 cm 15.88 cm
19.69 cm 0.88 kg 19.69 cm 1.13 kg 19.69 cm 1.36 kg
$10 C $10 C $17 C
2.86 cm 3.18 cm
15.90 cm 15.90 cm
$poa C $poa C $poa C $poa C $poa C $poa C
2.86 cm 3.18 cm
15.88 cm 15.88 cm
2.22 cm 10.80 cm 13.34 cm
0.52 kg
2.22 cm 10.80 cm 13.34 cm
0.54 kg
$poa C $poa C $poa C
1.27 cm 2.54 cm 0.95 cm
15.90 cm
19.69 cm 0.24 kg
1.27 cm 1.91 cm
15.88 cm
19.69 cm 0.27 kg
10.80 cm 14.61 cm 0.68 kg 10.80 cm 12.07 cm 0.13 kg
21.59 cm 25.40 cm
1010
B.A.R. Group Pty Ltd - Price List 2024 November
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