Accessories  
 
RBX (RUBEX HUB KIT)
 

Rubex interchangeable hub propellers are to be used with Rubber RBX hub kits.

Caution: Grease the propeller shaft
RBX hub kits:

Taiwan Patent: M310175
Patent #
The United States of America: US 7,488,225
Europe-Serial Number: EP 07010803.0

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Propeller Kits & Rubber Hub
Rubber Hub

 

.Understanding Boat Propeller Assemblies


On the Propshaft
A typical recreational boating propeller is mounted on a splined propshaft with a thrust washer, spacer, washer and nut, with some provision to keep the nut from turning loose, such as tabs on the washer or an additional cotter pin. There are exceptions, like the shear pin systems that were once widespread, but now most are as we describe here.

Thrust Washer
The thrust washer is mounted on the propshaft, between the lower unit and the propeller, and it may or may not have splines. It's an important component of a boat propeller's installation, because it fits the shaft in such a way that will not allow either itself or the propeller to move forward under thrust, thereby transferring thrust to the shaft and protecting the gear housing and its seal from contacting the rotating propeller.
A matching taper on the propshaft and the washer is one effective design that stops a thrust washer from moving too far forward.
The thrust washer also helps to keep the propeller centered on the shaft when the soft inner prop hub fails to do so under adverse high-torque conditions.

Hub
Inserted in the prop is a splined inner hub, which serves as a shock absorber between the prop blades and the shaft. A good prop hub should keep the propeller precision-centered on the propshaft, dampen vibrations and help protect the shaft from the severe shock of striking a submerged object with the propeller.
There are two basic types of hub (in addition to some rare specialty hubs): a pressed rubber hub or an interchangeable hub. The pressed hub is semi-permanently forced into position by a high pressure press in a prop shop. By contrast, the interchangeable hub is easily inserted by the prop installer. Each propeller is designed to use one type or the other. While pressed hubs are made of rubber, interchangeable hubs are sometimes made of a more rigid material, but we find that rubber interchangeable hubs offer better vibration dampening.
What's the difference between Rubex and Solas? Most Solas propellers are of the pressed rubber hub type and a few have specialty pin drive hubs. All Rubex props use interchangeable rubber hubs. There you have it!

Spacer
Like the thrust washer, the spacer assists alignment of the prop to the shaft when the inner hub is unable to hold its shape, only this time at the aft end of the prop.
The spacer bears reverse thrust loads and prevents the inner hub from moving aft, with its large surface area. The final washer and nut prevent the spacer from moving aft.
Many spacers are splined and some, for numerous Mercury, Mariner and Mercruiser applications, are also cogged or pinned to work in conjunction with an outer tab washer to prevent the nut from turning loose.

Washer
The washer helps fill space between the spacer and the nut, where the splines on the propshaft end and the threads begin. This helps prevent fore and aft play on the shaft by the prop.
A tab washer can be used if the spacer is designed for one. Otherwise, a large traditional washer would be expected on an assembly that uses a cotter pin to retain the nut.
When used, a tab washer's primary function is to prevent the nut from rotating in relation to the spacer.

Prop Nut
The prop nut secures the prop to the shaft and helps transfer reverse thrust to the shaft.
Normally made of brass, a nylon locknut is used in conjunction with a tab washer or else a castellated (castle) nut is used with a cotter pin.

Cotter Pin
Where used, the cotter pin passes through a hole in the propshaft after the castle nut has been tightened with its slots aligned on both sides of the hole.

Conclusion
With so few pieces, a prop assembly is not complicated. Because each of the parts in the prop assembly performs an important function, it is important to use the correct parts and to install them all as intended. To maintain the correct positioning, spacing and integrity, each part must be made to match both the propeller and the drive unit that it's going on.
Whenever doing a propeller installation, use your knowledge and pay particular attention to any instructions that may be provided with your prop or hub kit, especially concerning which parts to use.

 
Download RBX Installation Guides
RUBEX HUB KIT APPLICATION CHART
Hub Kit #
Series Prop
Evinrude/Johnson/BRP
40~75HP,Small Gearcase- 3-3/8",1975 & Newer 13 tooth spline
RBX-106
C
45-75 HP, Lg. Gearcase - 4-1/4", 1968-present, 13 tooth spline
RBX-106
D
85-140 HP, 1969-present, 13 tooth spline
RBX-106
D
60 & 70HP, (4-Stroke), 1998-present 13 tooth spline
RBX-110
D
90, 115 HP (4-Stroke), 2003-present, 15 tooth spline
RBX-125
D
140 HP (4-Stroke), 2003-present, 15 tooth spline
RBX-126
D
90-140 HP, Lg. Gearcase, 1976-90, 15 tooth spline
RBX-101
E
90-140 HP, Lg. Gearcase, 1991-present, 15 tooth spline
RBX-100
E
150-300 HP, 1976-1990, 15 tooth spline
RBX-101
E
150-300 HP, 1991-present, 15 tooth spline
RBX-100
E
Force
 
40/50 HP 1995-98,70 HP 1991-95, 75 HP 1996-98,13 tooth spline
RBX-114
C
75-150HP, 1995-present, 15 tooth spline
RBX-102
D
Honda
 
BF 35/45 1991-94;BF 40/50/50A 1995 & Newer, 13 tooth spline
RBX-113
C
75-90 HP,1995-1998, 15 tooth spline
RBX-102
D
75-90 HP, 1999-present, 115-130HP, 1998-present, 15 tooth spline
RBX-107
D
115-130 HP, 1998-present, 15 tooth spline
RBX-107
D
BF 135HP,150HP, 200 & 225 HP, 2003-present, 15 tooth spline
RBX-107
E
Note: Honda 200/225 Please use HONDA Hardware(HONDA thrust + SOLAS RBX inner Hub + Honda Spacer & Nuts)
Mercury/Mariner/Mercruiser
 
30 HP 1994 & Newer; 35 HP 1984-89; Model 402~500 1974-84;
Model 650 1972-76; Model 700 1977-84; 40/50 HP (2&4-Stroke, Not Bigfoot)
1977 & Newer;48 HP (Mariner) All Years; 55 HP (Mercury/Sea Pro/Marathon)
1995 & Newer;60 HP (Not Bigfoot or Sea Pro) 1978 & Newer;
60 HP (Mariner) 1976;70 HP Thru 1983; 13 Tooth spline
RBX-114
C
60 HP Bigfoot, 15 tooth spline
RBX-102
D
70-140 HP (except 135 HP), 1961-present, XR-4, XR-6, 15 tooth
RBX-102
D
135 HP, 1987-present, 15 tooth spline
RBX-102
E
150-300 HP, 1978-present, 15 tooth spline
RBX-102
E
Mercruiser Alpha One & Bravo One (less than 400HP), 15 tooth spline
RBX-102
E
1 1/4" propshaft, 19 tooth spline
RBX-123
E+
225 EFI (4 stroke) manufactured by Yamaha
RBX-124
E
Nissan/Tohatsu    
35HP(35B only)Thru 1984; 40HP 1984 & Newer,
50HP(All except 50C)1992 & Newer, 13 tooth spline
RBX-116
C
50 HP(50C only)1987-91; 55HP 1981-88; 60A 1986 & Newer
70A/70B 1981 & Newer, 13 tooth spline
RBX-112
C
90-140 HP, 1987-present, 15 tooth spline
RBX-109
D
OMC/Cobra Sterndrives    
Model 400 Cobra, 1978 - 1991, 13 tooth spline
RBX-106
D
Model 800/Cobra/King Cobra, 1978 - 1990, 15 tooth spline
RBX-101
E
Model 800/Cobra/King Cobra, 1991 - 1994, 15 tooth spline
RBX-100
E
Cobra SX, 1994 - present, 19 tooth spline
RBX-105
E
Suzuki    
DT50,50M 1983-84; DT55 1985-97; DT60 1983-84
DT65 1985-97, 13 tooth spline
RBX-115
C
DF70A, DF80A, DF90A (4-Stroke), 2009~ ,15 tooth spline
RBX-150
D
DF90, DF115 (4-Stroke), 2001-present, 15 tooth spline
RBX-125
D
DF140 (4-Stroke), 2001-present, 15 tooth spline
RBX-126
D
75-140 HP, DF60 & DF70, 1979-present, 13 tooth spline
RBX-110
D
DT150-225 HP,1986-present, 2 stroke DF150-300 HP 15 tooth spline
RBX-104
E
Yamaha    
F30(4-Stroke)2001-05; 40HP & 50HP(not T50),1984 & Newer;
48 HP 1995 & Newer; 55HP 1976-95; F40(4-Stroke)1999 & Newer;
F50(4-Stroke) 1995 & Newer; 60HP 1976-91;
F60(4-Stroke) 1999 & Newer, 13 tooth spline
RBX-117
C
T50, 1996-present, 15 tooth spline
RBX-108
D
60-100 HP, including 4-stroke, 1984-present, 15 tooth spline
RBX-108
D
80-140 HP, 1978-1983, 15 tooth spline
RBX-102
D
115HP,FS115 (4stroke),and 130 HP, 1984-present, 15 tooth spline
RBX-103
D
150-175 HP, 1978-1983, 15 tooth spline
RBX-102
E
150-300 HP, 1984-present, 15 tooth spline
RBX-103
E
225 EFI (4stroke)
RBX-103
E
F300,F350(300,350HP 4 stoke V8 Engine)
RBX-127
E+
Sterndrives, 1989-1993, 15 tooth spline
RBX-103
E
Volvo
   
SX Sterndrives, 1994-present, 19 tooth spline
RBX-105
E

 

Download RBX Installation Guides



   

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