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PSZ90、PSZ70、PSZ65、PSZX50、PS120、PS90、PS80、PS75、PS50、PZ30、PZ40、PSK70、PSK50、PSK40、PSK30、 PSZ90、PSZ70、PSZ65、PSZX50、PS120、PS90、PS80、PS75、PS50、PZ30、PZ40、PSK70、PSK50、PSK40、PSK30、 PSZ90、PSZ70、PSZ65、PSZX50、PS120、PS90、PS80、PS75、PS50、PZ30、PZ40、PSK70、PSK50、PSK40、PSK30、 PSZ90、PSZ70、PSZ65、PSZX50、PS120、PS90、PS80、PS75、PS50、PZ30、PZ40、PSK70、PSK50、PSK40、PSK30、 Introduction Our disc brake systems are engineered for high-performance oil drilling rigs, delivering reliable braking and precise control. Core components include service calipers (BK-00-7B/BK-00-6D) and emergency calipers (BK-0-7B/BK-0-6D), paired with robust hydraulic control units for responsive operation. Designed to withstand harsh drilling environments, these brakes feature durable friction discs, corrosion-resistant steel

Part list （control system） Sn Part № Description Q-ty Remarks —— BK-T Control system ※ 1 BK-F-J Pneumatic reversing valve 1 ※ 2 BK-F-Z Parking brake valve 1 ※ 3 BK-T-1 Valve group 1 1 ※ 4 BK-F-W4 Pneumatic reversing valve 1 ※ 5 BK-F-3Y Hydraulic reversing valve 2 ※ 6 BK-T-2 Valve group 2

Part list SN Part № Description Q-ty —— Hydraulic Unit Circurit Subassembly 1 BK-TY-BYQ Transformer 1 2 BK-TY-JCQ Ac Contactor 3 3 BK-TY-JDQ Intermediate Relay 1 4 BK-TY-K Air Switch 1 5 BK-TY-QD Indicate Light 4 BK-TY-TZ Indicate Light 3 6 BK-TY-A Button 6 7 BK-TY-K Air Switch 1 SJPETRO#RGPETRO#DFXK#ZYT#BPMCO#LANSHI#NOV#NATIONAL OILWELL WARCO #KERUI#HH#HONGHUA#BAOJI#BOMCO#CPTDC#SJ Contact info What's app +8615972752793 Luben@youlongpetro.com  

Part list (hydraulic station) Sn Part № Description Q-ty Remarks —— BK-Z hydraulic power unit 1 ※ 1 BK-Z-L1 Tank Breather 1 ※ 2 BK-Z1 Oil level/ temperature gauge 1 ※ 3 BK-Z-L2 Returning oil filter 1 BK-Z-LX2 Return oil filter 1 4 BK-TY Explosion-proof electric box 1 ※ 5 BK-Z2 High-pressure hose 2 6

Part list (75B Service caliper cylinder assembly) Sn Part № Description Q-ty Remarks —— BK-7-7Bg service caliper cylinder assembly 1 BK-SR-1 sealing ring 1 2 BK-11-S6 Socket cap head screw 8 3 BK-11-D2 Washer 8 4 BK-7-7Ag1 Cover 1 5 BK-SR-2 sealing ring 1 6 BK-GB-1 Guide band 1 7 BK-SR-7 sealing ring 1 8

Part list (75B Service calipers) Sn Part № Description Q-ty Remarks —— BK-00-7B Service caliper ※ 1 BK-1-7A Brake pad 2 ※ 2 BK-11-D1 Lock washer 18 3 BK-11-S1 Hexagon head bolt 18 4 BK-2-7B Steel backing 2 5 BK-3-7B Sleeve 4 6 BK-4-7B Clevis pin with head 2 7 BK-3-7B1 Sleeve 4 8 BK-5-7Bg

Part list (75B Emergency caliper cylinder assembly) Sn Part № Description Q-ty Remarks —— BK-7-7B Emergency caliper cylinder assembly 1 BK-11-S4 Socket cap head screw 12 2 BK-11-D1 Washer 12 3 BK-SR-1 sealing ring 1 4 BK-SR-2 sealing ring 1 5 BK-7-7A1 Cover of the cylinder 1 6 BK-GB-1 Guide band 1 7 BK-SR-3 sealing

Part list (75B Emergency calipers) Sn Part № Description Q-ty Remarks —— BK-0-7B Emergency caliper ※ 1 BK-1-7A Brake pad 2 ※ 2 BK-11-D1 washer 16 3 BK-11-S1 Hexagon head bolt 16 4 BK-2-7B Steel backing 2 5 BK-3-7B Sleeve 4 6 BK-4-7B Clevis pin with head 2 7 BK-3-7B1 Sleeve 4 8 BK-5-7B Lever

Sn Part № Description Q-ty Remarks —— BK-7JX Actuating mechanism 1 BK-7JX1 Upper mounting base 2 ※ 2 BK-7JX2 Hexagon head bolt 20 ※ 3 BK-7JX3 Caliper frame 2 ※ 4 BK-00-7B Service calipers 6 ※ 5 BK-0-7B Emergency calipers 2 ※ 6 BK-7JX4 Lower mounting base 2 ※ 7 BK-7JX5 Friction disc 2 ※

Part list (control system) Sn Part № Description Q-ty Remarks —— BK-Td Control system ※ 1 BK-F-J Pneumatic reversing valve 1 ※ 2 BK-F-Z Parking bake valve 1 ※ 3 BK-Td-1 Valve group 1 1 ※ 4 BK-F-W4 Pneumatic reversing valve 1 ※ 5 BK-F-3Y Hydraulic reversing valve 1 ※ 6 BK-T-2 Valve group 2