image of Variator Boss

Variator Boss-     

also known as Collar, Spacer Movable Drive, Spacer Sleeve, Boss Drive Face, etc.

Description

Variator Boss

Ordinary, yet Extraordinary.

  Variator Boss looks like merely a simple metal tube, but it is a non-negligent parts for transmission system.

  Guess it is not possible to think of any parts that looks simpler than a boss. As one of the core parts in transmission, a variator boss is the most straightforward parts to function. Depending on its glossy, sleek, and tough surface, a variator boss seriously determine whether the variator set can move smoothly.

  For those who care much about long product lifetime, rust-resistance, and free-of-deformation, Dr.Pulley variator boss provides you a total solution.

feature of variator Boss

Design

Sleek Surface

  One core concept when designing a variator boss is low coefficient of friction.

  It is very crucial to lower the friction force generated between the variator boss and the bushing (located in the center of the variator), so that the variator can move smoothly. Thus, most of the surface of a variator boss is glossy and sleek.


Strong Strength

Strong Strength-icon

  Along with the speed change of a CVT vehicle, the variator performs a reciprocating motion on the variator boss.

  However, since this motion is not parallel and the variator is also rotating at the same time, the force applied on the variator boss is uneven.

  Because of this, the surface of the boss must be strong enough to overcome this uneven pressure so as to prevent from being caused any pit or pothole (in the microscopic view) which can lead obstacles to gear ratio change. Rare but possible, variator boss with serious bumpy surface can cause the variator stuck.


Superior Wear-resistance

Superior Wear-resistance-ICON

  Wear-resistance is highly related to smoothness and toughness. You may find a variator boss changed from a sleek-surfaced tube to a bumpy-surfaced one if you are using a poor wear-resistant boss.

  A worn-out boss can affect the smooth movement required for this CVT system, and the dirt/particle from wear can also accumulate to form obstacles on the pathway variator moves, which will cost you much time taking it out for cleaning and maintenance. Thus, to prevent these hassles, it is smart and important to choose a variator boss with superior wear-resistance.

If Variator Boss length is too short ➔ https://drpulley.co/how-to-choose-the-right-weight-for-roller-weights/

Product Specifications

The following chart shows the specifications of our current variator boss. Since one Boss can be used on various models of vehicles, we simply skip the applicable models here. (Of course, whenever you have any questions, you are free to write to us.)

If Variator Boss length is too short ➔ https://drpulley.co/variator-boss-length-is-too-short/

ItemOutside Dia.Inside Dia.Height
Boss 15120118 (0.71)13 (0.51)38 (1.50)
Boss 15120221 (0.83)16 (0.63)37.5 (1.48)
Boss 15120321 (0.83)16 (0.63)42 (1.65)
Boss 16130120 (0.79)14 (0.55)36 (1.42)
Boss 16130224 (0.94)15.5 (0.61)45.1 (1.78)
Boss 18120121 (0.83)16 (0.63)46.5 (1.83)
Boss 181201M21 (0.8316 (0.63)48 (1.89)
Boss 18140124 (0.94)15 (0.59)51 (2.01)
Boss 181401M24 (0.94)17 (0.67)51 (2.01)
Boss 18140224 (0.94)17 (0.67)45 (1.77)
Boss 18140524 (0.94)16.5 (0.65)51 (2.01)
Boss 18140622 (0.87)15 (0.59)38.7 (1.52)
Boss 20120228 (1.10)19 (0.75)60.2 (2.37)
Boss 201202S28 (1.10)21 (0.83)60 (2.36)
Boss 20150227 (1.06)17 (0.67)52.5 (2.07)
Boss 20150326 (1.02)17 (0.67)46 (1.81)
Boss 201503M26 (1.02)17 (0.67)44 (1.73)
Boss 20150627 (1.06)20 (0.79)51.5 (2.03)
Boss 21120124 (0.94)15 (0.59)47.9 (1.89)
Boss 21120224 (0.94)16 (0.63)53.5 (2.11)
Boss 21150124 (0.94)15 (0.59)47 (1.85)
Boss 21150226 (1.02)17 (0.67)45.2 (1.78)
Boss 21150427 (1.06)19 (0.75)44.5 (1.75)
Boss 23180127 (1.06)17 (0.67)63 (2.48)
Boss 24180127 (1.06)17 (0.67)62 (2.44)
Boss 25150034.95 (1.38)25.05 (0.99)63.3 (2.49)
Boss 28220129 (1.14)22 (0.87)63.5 (2.50)
Boss 29180134.96 (1.38)25 (0.98)75.7 (2.98)
Boss 29180234.96 (1.38)25.1 (0.99)75 (2.95)
Boss 30180034.95 (1.38)25 (0.98)71.5 (2.81)
Boss 30180134.95 (1.38)25.05 (0.99)74.5 (2.93)
Boss 30180234.96 (1.38)21.9 (0.86)67 (2.64)
Boss 30180334.95 (1.38)25.85 (1.02)70.5 (2.78)
Boss 30200234.95 (1.38)24.8 (0.97)79 (3.11)
Unit: mm (inch)

Boss Washers are listed as below. If you need, you may add washers when buying Variator boss.

ItemOutside Dia.Inside Dia.Thickness
22x14x0.5t22 (0.87)14 (0.55)0.5 (0.02)
24x15x0.5t24 (0.94)15 (0.59)0.5 (0.02)
24x15x1t24 (0.94)15 (0.59)1 (0.04)
22x16x0.3t22 (0.87)16 (0.63)0.3 (0.01)
24x16x0.5t24 (0.94)16 (0.63)0.5 (0.02)
32x17x2t32 (1.26)17 (0.67)2 (0.08)
24x17x0.5t24 (0.94)17 (0.67)0.5 (0.02)
24x17x1t24 (0.94)17 (0.67)1 (0.04)
25×17.5×1.5t25 (0.98)17.5 (0.69)1.5 (0.06)
27×17.5×0.5t27 (1.06)17.5 (0.69)0.5 (0.02)
26×17.5×0.5t26 (1.02)17.5 (0.69)0.5 (0.02)
30×22.5x1t30 (1.18)22.5 (0.89)1 (0.04)
27×19.3×0.5t27 (1.06)19.3 (0.76)0.5 (0.02)
34×25.85×0.5t34 (1.34)25.85 (1.02)0.5 (0.02)
35x25x0.5t35 (1.38)25 (0.98)0.5 (0.02)
Unit: mm (inch)

More Information

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