What is the Otis test tool? GAA21750AK3? GAA21750AK2?

There are lots of Otis test tools on the market, and this article will help you know the difference.

Ok, there have 4 kinds of Otis test tools on the market:
1, GAA21750S2 
2, GAA21750AK2
3, GAA21750AK3 
4, GAA21750AK4 

And at first, we can see the photos of these Otis test tools:
1,GAA21750S2

black one




2, GAA21750AK2

blune one



3, GAA21750AK3

Still blue one



4, GAA21750AK4

Blue


So it's hard to differentiate only based on the appearance.

And the detail difference as follows:

OTIS Elevator Test Tool
JF code	OTEL0030	OTEL030105	OTEL0002L	OTEL21750AK3
Item	OTIS Elevator Test Tool （Black)	OTIS Elevator Test Tool(blue)	OTIS Elevator Test Tool(blue)	OTIS Elevator Test Tool(blue)
Brand	OTIS	OTIS	OTIS	OTIS
Specification	OTIS Elevator Test Tool （Black)	OTIS elevator test tool 2008 type(blue)	OTIS Elevator Test Tool(blue)	The latest OTIS Elevator Test Tool(blue)
Size	GAA21750S2 can not using for GECB board, even reading	GAA21750AK2 Can Used on all the otis elevator but GECB board; Can read GECB boar, but can not change the arguments	GAA21750AK3 can use for all kinds of otis lift even inculde GECB board, can using 65000times, and it have to send back to refresh when the 65000 times is used up	GAA21750AK4 is final version one, it can use for all kinds of otis lift even inculde GECB board, and it's real no limited times;
P/N	GAA21750S2	GAA21750AK2	GAA21750AK3	GAA21750AK4
Times	No time limited	No time limited	65000 tims	No time limited
Price	Very very cheap	cheap	moderrat cost	moderrat cost
Delivery time	3 working days after the payment
HS code	8431310001
Net weight	0.7kg
MOQ	1pcs
Optional accessory	Black bag
Warranty-Time	1 years
JF’s expert: Jiefeng E&E CO.,LTD the biggest elevator and escalator parts supplier and trader in China. JF’s products: We are supplying all kinds of elevator and escalator parts for Mitsubishi, OTIS, LG-Sigma, KONE, Schindler, Toshiba, Fujitec, Hyundai, Hitachi, ThyssenKrupp and some Chinese brands, such as KOYO, STEP, BLT, we also supplying the Mechanical parts here, like Rollers, door shoes, door header, Step Chain, Escalator step, Escalator handrail, Escalator comb plate, Escalator yellow cleats, etc. JF’s guarantee: We are offering 12month guarantee for our spare parts here and guarantee its Origin and all the parts will be testing before delivery to make sure its working conditions, if any parts in poor quality, we will take it our and exchange it at our cost here! JF’s Payment term: T/T or PayPal JF’s Quality control: All Parts to be tested here for delivery. Email: jill@elevator.hk; Jieson@elevator.hk; jiefeng02@elevator.hk;

GAA21750S2 (Black one)

Can Used on all the otis elevator but GECB board, even can not read;

GAA21750AK2 (Blue one)

Can Used on all the otis elevator but GECB board;

Can read GECB boar, but can not change the arguments;

GAA21750AK3 (Blue one)

It can use for all kinds of otis lift even inculde GECB board, can using 65000times, and it have to send back to refresh when the 65000 times is used up;

GAA21750AK4 (Blue one)

This is final version one, it can use for all kinds of otis lift even inculde GECB board, and it's real no limited times;

Feature:

1, GAA21750AK2 suit all type of otis lift model which produce before 2008 year and most otis lift model which produced after 2008 but some otis special model which produced after 2008 year which is not sell in chinese market  it may can not use. Totally this tool is better than otis TT GAA21750S2 black color;

2, GAA21750AK3 compare with EUROPE type: the Europe type type need refresh on otis webiste after 200 times, and we have the no time limited, it can be used until the tool is broken, and it can be used on 65000 times in theoretically;

3, GAA21750AK4 can use for all Otis lift, and it's real no time limited

What’s Schindler friction wheel?

Firction wheel is an very important part of escalator, it’s commonly used, so we would like to help you to learn more about the firction wheel, and this will help you to better usage and support it.

Today we using Schindler firction wheel as a example:

Technology

Schindler friction wheels consist of an elastomer coating and a metal body.

The elastomer coating is like the escalator handrail’s coating.

The friction lining is permanently joined to the metal part.

The polychloroprene based elastomer mixture used has a hardness of 80 ± 5 Shore A. It is wear resistant and largely oil resistant, by the way Schindler firction wheel also using ellow paint to rust-proof.

The metal body is made from standard free cutting  steel 9 S 20 K. Centerings are provided for subsequent machining.

The metal body is wider on one side than the friction lining for easy rolling gear mounting.

Installation

The axles of the driving and driven shafts must be aligned parallel. Radial runout of the wheels must be avoided.

Where rolling gears are mounted side by side, the shaft must have sufficient rigidity.

For applications requiring a virtually vibration-free drive and high concentricity – and rolling gears mounted in pairs – the rolling gears must ground after mounting.

Worn rolling gears must be replaced in pairs.

In this way,the high production tolerances are compensated and rolling gears mounted in pairs are subjected to uniform load.

matters need attention

When machining the metal parts, the temperature of the metal should not exceed 100 °C. When grinding and turning, the temperature of the friction lining should not exceed 70 °C, briefly 80 °C.

Reciprocating longitudinal grinding produces a smooth surface.

Face grinding must be avoided.

Exerting low pressure prevents excessive heating. The elastomer coating smears under excessive pressure.

If the surface is smeary, interrupt grinding and allow the elastomer coating to cool down completely.

Apply talcum powder to the surface.

Subsequently grind clean exerting low pressure.

So buy Schindler firction wheel, pls contact us:

JIEFENG E&E CO.,LTD

The leader of elevator and escalator parts' supplier

Add:No.124 HongJiaHui Plaza Wuxing Road, Jiangyin City,China 

www.escalatorparts.cn

KONE Escalator Comb Plate KM2209592H01 DEE2209592's detail photos

KONE Escalator Comb Plate KM2209592H01 DEE2209592's detail photos

KM2209592H01 KONE Escalator Comb Plate
Item	Escalator Comb Plate
Brand	KONE
Specification	Escalator Comb Plate
Size	L=200.7mm, H=188mm , hole distance=99mm  DEE2209592, 22teeth
P/N	KM2209592H01(DEE2209592)
Delivery time	10 working days after the payment
HS code	8431310090
Net weight	0.815g/pcs
MOQ	10pcs
Warranty-Time	1 years
Walkway Comb Plate located at the rung step or pedal gate; To facilitate the transition from top to bottom passengers; A part engaged with a step or pedal Comb plate is the elevator safety protection device Micro-switch behind the comb plate If a foreign body can be locked into the elevator to stop running; One side of the comb plate is supported on the leading edge plate, And the other side serves as a fixing surface of the comb teeth its horizontal inclination <10 °; The structure of the comb plate shall be adjustable; To ensure that the depth of the comb teeth ≥ 6 mm; It can be made of aluminum alloy profiles; Thicker carbon steel plate can also be used;
JF’s expert: Jiefeng E&E CO.,LTD the biggest elevator and escalator parts supplier and trader in China. JF’s products: We are supplying all kinds of elevator and escalator parts for Mitsubishi, OTIS, LG-Sigma, KONE, Schindler, Toshiba, Fujitec, Hyundai, Hitachi, ThyssenKrupp and some Chinese brands, such as KOYO, STEP, BLT, we also supplying the Mechanical parts here, like Rollers, door shoes, door header, Step Chain, Escalator step, Escalator handrail, Escalator comb plate, Escalator yellow cleats, etc. JF’s guarantee: We are offering 12month guarantee for our spare parts here and guarantee its Origin and all the parts will be testing before delivery to make sure its working conditions, if any parts in poor quality, we will take it our and exchange it at our cost here! JF’s Payment term: T/T or PayPal JF’s Quality control: All Parts to be tested here for delivery. Email: jill@elevator.hk; Jieson@elevator.hk; jiefeng02@elevator.hk;

Detail photos of KONE Comb Plate ECO-C DEE3703280

DEE3703280 KONE Comb Plate ECO-C
Item	KONE Comb Plate ECO-C
Brand	KONE
Specification	KONE Comb Plate ECO-C
Size	L=197.4mm, H=179.75mm  22Teeth  A  Hole distance 98.51mm
P/N	DEE3703280
Delivery time	10 working days after the payment
HS code	8431310090
Net weight	0.682kg/pcs
MOQ	10pcs
Warranty-Time	1 years
Walkway Comb Plate located at the rung step or pedal gate; To facilitate the transition from top to bottom passengers; A part engaged with a step or pedal Comb plate is the elevator safety protection device Micro-switch behind the comb plate If a foreign body can be locked into the elevator to stop running; One side of the comb plate is supported on the leading edge plate, And the other side serves as a fixing surface of the comb teeth its horizontal inclination <10 °; The structure of the comb plate shall be adjustable; To ensure that the depth of the comb teeth ≥ 6 mm; It can be made of aluminum alloy profiles; Thicker carbon steel plate can also be used;
JF’s expert: Jiefeng E&E CO.,LTD the biggest elevator and escalator parts supplier and trader in China. JF’s products: We are supplying all kinds of elevator and escalator parts for Mitsubishi, OTIS, LG-Sigma, KONE, Schindler, Toshiba, Fujitec, Hyundai, Hitachi, ThyssenKrupp and some Chinese brands, such as KOYO, STEP, BLT, we also supplying the Mechanical parts here, like Rollers, door shoes, door header, Step Chain, Escalator step, Escalator handrail, Escalator comb plate, Escalator yellow cleats, etc. JF’s guarantee: We are offering 12month guarantee for our spare parts here and guarantee its Origin and all the parts will be testing before delivery to make sure its working conditions, if any parts in poor quality, we will take it our and exchange it at our cost here! JF’s Payment term: T/T or PayPal JF’s Quality control: All Parts to be tested here for delivery. Email: jill@elevator.hk; Jieson@elevator.hk; jiefeng02@elevator.hk;