Aluminum Ball-Race Roller

* 13mm DS
* 13mm LW
* 17mm RB
* 17mm PR
* 17mm RL DS
* 17mm RL LW
* 19mm RB 5SP
* 19mm PR 5SP
* 19mm RB 6SP
* 19mm PR 6SP
* 19mm RB Aero
* 19mm PR Aero
* 19mm RL DS
* 19mm RL LW

The **aluminum ball-race rollers** (Japanese: アルミベアリングローラー, *Arumi Bearingu Rōrā*) are a series of Grade-Up Parts released by Tamiya since 1994.

## General info

As they names implies, they are the aluminum rollers with the 520-size ball bearing built-in. This allows the rollers to rotate smoothly. Each set comes with 2 rollers, 2 pair of aluminum bushings and a pair of screws. The rollers, when installed, were usually held in place by a pair of bushings that sandwiching them.

They were available in various diameters, ranging from 13mm to 19mm, and were available in various colors, including regular aluminum silver, anodized blue, red and gun metal. It should be noted that there is a period where both the 19mm 5-spoke rubber ring rollers and the 19mm aero-spoke rubber ring rollers were sold in multiple colors while having the same item numbers.

Types of ring available for the aluminum ball-race rollers includes rubber ring type, plastic ring type and the ringless type. Rubber ring type usually has the higher friction against fence, while the plastic ring type has the lower friction.

Types of spoke types available for the rollers includes 5-spoke type, aero-spoke type, 3-spoke type, lightweight type, 6-spoke type and dish type. Weight of the rollers varies depends on the spoke type.

## Gallery

### Parts Variants

13mm Dish (Ringless/Blue)13mm Dish (Ringless/Red)13mm Dish (Ringless/Purple)13mm Dish (Ringless/Gold)13mm Dish (Ringless/Pink)13mm Dish (Ringless/Violet)13mm Dish (Ringless/Gun Metal)13mm Dish (Ringless/Green)13mm Lightweight (Ringless/Black)13mm Lightweight (Ringless/Red)17mm Spoke Plastic Ring (Red)17mm Spoke Plastic Ring (Light Blue)17mm Spoke Plastic Ring (Orange)17mm Dish Rubber (Blue)17mm Dish Rubber (Gun Metal)17mm Dish Rubber (Red)19mm 5-Spoke Plastic (Orange)19mm 5-Spoke Plastic (Red)19mm 5-Spoke Plastic (Light Blue)19mm 5-Spoke Plastic (Pink)19mm 5-Spoke Plastic (Green)19mm Aero Plastic (Red)19mm Aero Plastic (Light Blue)19mm Aero Plastic (Orange)19mm Dish Ringless (Blue)19mm Dish Ringless (Red)19mm Dish Rubber (Blue)19mm Dish Rubber (Red)19mm Dish Rubber (Gun Metal)19mm Dish Rubber (J-Cup Special)19mm Dish Rubber (J-Cup 2013 Blue)19mm Dish Rubber (J-Cup 2013 Yellow)19mm Dish Ringless (J-Cup 2016)19mm Dish Ringless (J-Cup 2020)19mm Dish Ringless (J-Cup 2021)19mm Lightweight Ringless (Pink)19mm Lightweight Ringless (Blue)19mm Lightweight Ringless (Red)19mm Lightweight Ringless (Gun Metal)19mm Lightweight Ringless (Black)19mm Lightweight Ringless (Purple)19mm Lightweight Ringless (Gold)19mm Lightweight Ringless (Green)

## External links

### Tamiya Japan

#### Standard models

* 19mm Aluminum Ball-Race Rollers (5-Spoke Type) (Reissue) at Tamiya Japan
* 19mm Aluminum Ball-Race Rollers (Aero-Spoke Type) at Tamiya Japan
* 17mm Aluminum Ball-Race Rollers (3-Spoke Type) at Tamiya Japan
* 19mm Aluminum Roller (Aero-Spoke) with Plastic Ring at Tamiya Japan
* 19mm Aluminum Rollers with Plastic Rings (Dish Type) at Tamiya Japan
* 13mm Aluminum Ball-Race Rollers (Ringless) at Tamiya Japan
* 17mm Aluminum Rollers with Plastic Rings at Tamiya Japan
* 19mm Aluminum Rollers (5 Spokes) with Plastic Rings at Tamiya Japan
* HG 19mm Aluminum Ball-Race Rollers (Ringless) at Tamiya Japan
* HG 17mm Aluminum Ball-Race Rollers (Ringless) at Tamiya Japan
* HG Lightweight 19mm Aluminum Ball-Race Rollers (Ringless) at Tamiya Japan
* HG Lightweight 17mm Aluminum Ball-Race Rollers (Ringless) at Tamiya Japan
* Lightweight 13mm Aluminum Ball-Race Rollers (Ringless) at Tamiya Japan
* 19mm Aluminum Ball-Race Rollers (6 Spokes) at Tamiya Japan
* 19mm Aluminum Ball-Race Rollers (6 Spokes) with Plastic Rings (Red) at Tamiya Japan

#### Color variants

* 13mm Aluminum Ball-Race Rollers (Ringless/Blue) (Reissue) at Tamiya Japan (Japanese)
* 13mm Aluminum Ball-Race Rollers (Ringless/Red) (Reissue) at Tamiya Japan
* 13mm Aluminum Ball-Race Rollers (Ringless/Purple) at Tamiya Japan (Japanese)
* 13mm Aluminum Ball-Race Rollers (Ringless/Gold) at Tamiya Japan (Japanese)
* 13mm Aluminum Ball-Race Rollers (Ringless/Green) at Tamiya Japan
* Lightweight 13mm Aluminum Ball-Race Rollers (Ringless/Black) at Tamiya Japan
* Lightweight 13mm Aluminum Ball-Race Rollers (Ringless/Red) at Tamiya Japan
* 17mm Aluminum Rollers with Plastic Rings (Red) (Reissue) at Tamiya Japan
* 17mm Aluminum Rollers with Plastic Rings (Light Blue) (Reissue) at Tamiya Japan
* 17mm Aluminum Ball-Race Roller Set (Dish/Blue) at Tamiya Japan
* 17mm Aluminum Ball-Race Roller Set (Dish/Gun Metal) at Tamiya Japan
* 17mm Aluminum Ball-Race Roller Set (Dish/Red) at Tamiya Japan
* 19mm Aluminum Rollers (5 Spokes) with Plastic Rings (Orange) at Tamiya Japan
* 19mm Aluminum Rollers (5 Spokes) with Plastic Rings (Red) at Tamiya Japan
* 19mm Aluminum Rollers (5 Spokes) with Plastic Rings (Light Blue) at Tamiya Japan
* 19mm Aluminum Rollers (5 Spokes) with Plastic Rings (Orange) (Reissue) at Tamiya Japan
* 19mm Aluminum Rollers (5 Spokes) with Plastic Rings (Red) (Reissue) at Tamiya Japan
* 19mm Aluminum Rollers (5 Spokes) with Plastic Rings (Light Blue) (Reissue) at Tamiya Japan
* 19mm Aluminum Rollers (5 Spokes) with Plastic Rings (Pink) at Tamiya Japan
* 19mm Aluminum Rollers (5 Spokes) with Plastic Rings (Green) at Tamiya Japan
* 19mm Aluminum Roller (Aero-Spoke) with Plastic Ring (Red) (Reissue) at Tamiya Japan
* 19mm Aluminum Roller (Aero-Spoke) with Plastic Ring (Light Blue) (Reissue) at Tamiya Japan
* 19mm Aluminum Roller (Aero-Spoke) with Plastic Ring (Orange) (Reissue) at Tamiya Japan
* 19mm Aluminum Ball-Race Roller Set (Dish/Blue) at Tamiya Japan
* 19mm Aluminum Ball-Race Roller Set (Dish/Red) at Tamiya Japan
* 19mm Aluminum Ball-Race Roller Set (Dish/Gun Metal) at Tamiya Japan
* 19mm Aluminum Ball-Race Roller Set J-Cup 2013 (Blue) at Tamiya Japan
* HG 19mm Aluminum Ball-Race Roller Set (Ringless/Blue) at Tamiya Japan
* HG 19mm Aluminum Ball-Race Roller Set (Ringless/Red) at Tamiya Japan
* HG 19mm Aluminum Ball-Race Rollers (Ringless) J-Cup 2016 at Tamiya Japan
* HG 19mm Aluminum Ball-Race Roller Set (Ringless/Blue) (Reissue) at Tamiya Japan
* HG 19mm Aluminum Ball-Race Rollers (Ringless/Black) J-Cup 2020 at Tamiya Japan (Japanese)
* HG 19mm Aluminum Ball-Race Rollers (Ringless) J-Cup 2021 at Tamiya Japan
* HG Lightweight 19mm Aluminum Ball-Race Rollers (Ringless/Pink) at Tamiya Japan
* HG Lightweight 19mm Aluminum Ball-Race Rollers (Ringless/Blue) at Tamiya Japan
* HG Lightweight 19mm Aluminum Ball-Race Rollers (Ringless/Red) at Tamiya Japan
* HG Lightweight 19mm Aluminum Ball-Race Rollers (Ringless/Gun Metal) at Tamiya Japan
* HG Lightweight 19mm Aluminum Ball-Race Rollers (Ringless/Black) at Tamiya Japan
* HG Lightweight 19mm Aluminum Ball-Race Rollers (Ringless/Purple) at Tamiya Japan
* HG Lightweight 19mm Aluminum Ball-Race Rollers (Ringless/Gold) at Tamiya Japan
* HG Lightweight 19mm Aluminum Ball-Race Rollers (Ringless/Green) at Tamiya Japan