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| Specification | Technical details |
| Product type | Needle bearing with needle / roller cage |
| Mark | Tm kart (Original TM Racing Genuine Parts) |
| Reference / Standard | HK 2012 (HK 20/12) |
| Dimensions | 20 mm (Int.) X 26 mm (Ø ext.) X 12 mm (Width) |
| Location | Clutch Pink / Primary Transmission Tree |
| Motor compatibility | Tm kart : All box engines Kz10, kz10b, kz10c, kz-r1, kz-r2, kz-r3... |
🛠️ Complete description of the original TM KART CLUTKING CLUTCH needle socket - TM KZ motors
Make a perfect guidance and without playing to your clutch sandy thanks to the nEIGHT NEIGHT NEIGHBORHONE NEIGHT TM KART. This stamped sleeve bearing (type HK 20/12) is an essential high-precision guidance element of the primary transmission on the Italian brand 125cc gear motors.
Manufactured according to very strict tolerances to support high rotational speeds and heavy radial loads, this HK 2012 roller cage allows the pinion or clutch bell to rotate freely on the transmission shaft with a coefficient of Minimal friction. Its processed steel structure guarantees excellent heating of the box oil, preventing premature wear of the shaft reach on all blocks TM KZ10, KZ-R1, KZ-R2 and KZ-R3.
👨🔧 Tip in Michel (the corner of the expert)
* "Hi mechanical enthusiasts! The HK 2012 needle socket is the small discreet bearing of the clutch that takes a huge radial load at each clutch. If it takes from the game or heats dry, it's all the gorgeon that starts Vibrate and who uses the box tree !
My stand trick for replacing the HK 2012 bushing: removing it in the axis and the oil bath at assembly !
When changing this bearing, never use a live hammer on the sleeve! The steel outdoor sleeve of the 2012 HK is very fine: if you type through, you will deform it and block the needles inside. Use a suitable roller or a socket at the right diameter that presses only on the rectified outer edge.
Before replacing the bell or pinion over, generously soak the needles of the new HK new with your 2T competition box oil. A well lubricated needle bearing from the first start, it's the assurance of an ultra-silent transmission and a perfect free movement! "*
📐 Installation guide: step by step
❓ FAQ SEO (Frequently Asked Questions)
Q: What do the dimensions of the HK 2012 sleeve ?
A: The standard code "HK 2012" (or HK 20/12) denotes an open-end needle socket measuring 20 mm inner diameter (for the tree), 26 mm outside diameter (for housing) and 12 mm wide.
Q: How often does this HK 2012 needle cage be replaced on a TM KZ engine ?
A: It is recommended to check the condition of the needles and cage during each major overhaul of the clutch or the bottom-motor (about every 15 to 20 hours). If you observe marking, blocked needles or radial game, the replacement is mandatory.
Q: Is this HK 2012 socket the same for TM KZ-R1, KZ-R2 and KZ-R3 engines ?
A: Yes, the original TM KART HK 2012 needle socket is a standard part used on clutch transmission shaft span for all 125cc gears with TM Kart gearbox.
19040
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Make a perfect guidance and without playing to your clutch sandy thanks to the NEIGHT NEIGHT NEIGHBORHONE NEIGHT TM KART. This stamped sleeve bearing (type HK 20/12) is an essential high-precision guidance element of the primary transmission on the Italian brand 125cc gear motors.
Manufactured according to very strict tolerances to support high rotational speeds and heavy radial loads, this HK 2012 roller cage allows the pinion or clutch bell to rotate freely on the transmission shaft with a coefficient of Minimal friction. Its processed steel structure guarantees excellent heating of the box oil, preventing premature wear of the shaft reach on all blocks TM KZ10, KZ-R1, KZ-R2 and KZ-R3.
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