TABLE14
Wear Limits for WCB Components
Item Description Wear Limit Remarks
#8
Friction Disc		 Friction Material Fully worn at bottom of dust groove.See Figure 5. Friction material must also be replaced if contaminated with oil or grease Multi-disc units have adjustment provision.See 4.2.
#3
Wear Plate		 Friction Wear Surface Maximum wear is 0.030″ (0.76 mm). Wear will be in form of circular grooves in copper surface
#19
Cylinder		 Seal Area Maximum wear is 0.005″ (0.13 mm). Wear will bein the form of grooves where the seals contact.
#14
Pressure Plate		 Reaction Holes Maximum wear is 0.031″ (0.80 mm). Wear will be in the form of elongation of the holes. Original hole diameters are shown in Table 8A.
#31
Reaction Plate		 Reaction Holes Maximum wear is 0.031″ (0.80 mm). Wear will be in the form of elongation of the holes. Original hole diameters are shown in Table 8A.
#12
Clamp Tube		 Reaction Area Maximum wear is 0.015″ (0.38 mm). Wear will be in the form of a notch or step on the side of the tube.
#9 & #28
Friction Disc Core
and Gear		 Gear Backlash Maximum allowable total backlash is 0.040″ (1.0 mm). If step is worn in gear,gear must be replaced.

You Long Petroleum Machinery Spares ltd.(YOU LONG PETRO) engages in the export of the petroleum equipment and materials and provides materials and equipment for CNPC and SINOPEC’s overseas projects. Established in 2003,YOU LONG PETRO has started the manufacturing and supplying of petroleum materials and equipment since 2003.YOU LONG PETRO has provided its products and services to 36 countries and regions across the globe.YOU LONG PETRO’s export performance has come out top in central enterprises in successive years and it has been acknowledged as China’s largest supplier of petroleum and petrochemical materials，which is based on design,production,sale and technical service.Our products are completely interchangeable with the following enterprises.
The products are asfollows:
1、Drilling mud pump parts(Bomco, HH, Rongsheng, RJ etc.)
2、Oil drilling rig parts & Workover rig parts (RG, SJ,DFXK etc),
3、Parts for hydraulic disc brake (BPM,Boke,Bomco,RG)
4、ATDPush-plate clutch and parts & WCB2 Auxiliary brake parts.
5、ZQ Drill pipe power tongs and parts,TQ Series of casing power tongs and parts.
6、CB/LT series:Air tube clutch and parts.
7、Agent products such as: Bearings, Chains, Cardan shaft,V-belt,engine etc
Contact info
What’s app +8615972752793
Luben@youlongpetro.com
SJPETRO#RGPETRO#DFXK#ZYT#BPMCO#LANSHI#NOV#NATIONAL OILWELL WARCO#KERUI#HH#HONGHUA#BAOJI#BOMCO#CPTDC#SJ