Brake assembly BZT and BZTM

Tost Flugzeuggerätebau > Produkte > Hydraulic brake system TOST > Brake assemblies > In House production TOST > Brake assembly BZT and BZTM

The 3-piston brake assembly BZT is designed as a floating brake caliper and can be mounted to 3.5′′, 4′′ and 5′′ disk brake wheels of the series Max II, Tria and Penta.
The brake assembly features an extremly light weight of 440 g and very compact outer dimensions.
Because of the metric screw connection the change of the brake linings can be carried out without any special tools.
Especially for light, single-seated sailplanes or UL-motorplanes, in which a low weight of the components is important, the brake assembly BZT is convenient.

P/N	Description	Hydraulic fluid	Application	Braking torque Nm	Connecting thread	Weight g	Anchor bolt lenght mm	Brake disk thickness mm
080100	BZT	DOT4	4′′ SRT Tria 5′′ SBP Penta	250	M10x1	440	52.5*	5
080101	BZT	Mineral Fluid	4′′ SRT Tria 5′′ SBP Penta	250	M10x1	440	52.5*	5
080108	BZT	DOT4	4′′ SB Classic	250	M10x1	440	45.5	5
080110	BZT M	DOT4	Max II SB	100	M10x1	440	27	3.5
080111	BZT M	Mineral Fluid	Max II SB	100	M10x1	440	27	3.5

* length variable

We can offer different universal or customised anchor plates for the mounting of the brake assembly to the landing gear according to your requirements.

Spare parts for brake assembly BZT

P/N	Description	Hydraulic fluid	Remarks	Number
080801	Housing BZT	N/A		1
080802	Piston BZT	N/A		2
080803	Counter plate BZT	N/A		3
080805	Piston sealing BZT	DOT4		4
080806	Piston sealing BZT	Mineral Fluid		4
080810	Brake lining BZT	N/A	glued to brake lining retainer	5
080811	Anchor bolt BZT	N/A	applicable for p/n 080100/080101	6
80912	Anchor bolt BZT for 4″ Classic wheel	N/A	applicable for p/n 080108	6
080812	Anchor bolt BZT M	N/A	applicable for p/n0 80110/080111	6
080815	Washer anchor bolt BZT	N/A		7
080816	Nut anchor bolt BZT	N/A		8
080817	Housing screw BZT	N/A		9
080819	Retainer screw BZT	N/A		10
080820	Washer housing or retainer screw	N/A		11
059102	Stahlbus bleeder valve M10x1	DOT4		12
059202	Stahlbus bleeder valve M10x1	Mineral Fluid		12

Explosionszeichnung_BTZ

Brake lining wear limit:
The minimum replacement thickness on brake linings is 0.5 mm.
The total thickness of brake linings may not be less than 0.5 mm at any point.

Installation note:
After mounting the brake assembly tighten the hexagonal bolt with a tightening torque of 6 Nm.