Detail Information

Type:	Rod End	Bore Size:	10 - 80 Mm
Material:	Carbon Steel	Service:	OEM Customized Services
Application:	Industry,Engineering Hydraulic Cylinders,engineering,Machinery,Agricultural,	Package:	Plastic Bag+ Box+ Carton + Pallet,single Box Or As Your Requirments,industrial Package
Oem:	ACCEPT,Acceptable,welcome,Allowed	Sample:	Available
Port:	Shanghai
Highlight:	Carbon Steel Welded Cylinder Bearing , 10mm Bore Hydraulic Cylinder Bearing , 80mm Bore Rod End Bearing

Product Description

Welded Cylinder Bearing GK Series

Welded cylinder bearings, also known as joint bearings, are specifically designed for hydraulic cylinder connection parts, particularly rod end bearings with weldable earrings. Common models include GK series (such as GK17DO, GK20DO) and GF series. These bearings are widely used in construction machinery and hydraulic equipment to provide flexible rotational connections between cylinders and structural components.

This bearing type consists of an outer ring, inner ring, spherical plain bearings, and sealing structure. The outer ring features earrings that can be welded directly to equipment structures. Key characteristics include strong load-bearing capacity, impact resistance, and easy installation. Available in both non-lubricated and oil-lubricated types, some products include locking ports to enhance hydraulic cylinder connection reliability.

Product Specifications:

Bearing Code	Dimensions (mm)												Load Rating kN		=a°	Unit Weight (kg)
Bearing Code	d	B	dk	C1	d2	h	l2	l7	d5	d6	e	rs	Dynamic	Static	=a°	Unit Weight (kg)
GK10DO	10	9	16	7	29	24	38.5	15	15	3	2	0.3	8.1	15	12	0.041
GK12DO	12	10	18	8	34	27	44	17.5	17.5	3	2	0.3	10	21	10	0.066
GK15DO	15	12	22	10	40	31	51	20	21	4	2.5	0.3	16	32	8	0.120
GK17DO	17	14	25	11	48	35	58	23	24	4	3	0.3	21	31	10	0.190
GK20DO	20	16	29	13	53	38	64.5	27.5	27.5	4	3	0.6	21	40	10	0.180
GK25DO	25	20	35.5	17	64	45	77	33	33.5	4	4	0.6	48	75	7	0.450
GK30DO	30	22	40.7	19	73	51	87.5	37.5	40	4	4	0.6	62	95	6	0.670
GK35DO	35	25	47	21	82	61	102	43	47	4	4	0.6	79	125	6	1.020
GK40DO	40	28	53	23	92	69	115	48	52	6	5	0.6	99	156	7	1.400
GK45DO	45	32	60	27	102	77	128	52	58	6	5	0.6	127	208	7	1.930
GK50DO	50	35	66	30	112	88	144	59	62	6	6	0.6	156	250	6	2.690
GK60DO	60	44	80	38	135	100	167.5	72.5	70	6	8	1	245	294	6	4.000
GK70DO	70	49	92	42	160	115	195	85.5	80	6	10	1	313	510	6	7.000
GK80DO	80	55	105	47	180	141	231	98	95	6	10	1	400	620	6	11.000

Product Features

High Structural Rigidity: Welded earrings create integrated connections that are more secure than bolted connections, enhancing overall structural rigidity and torsional resistance
Flexible Installation: Earring design allows installation from multiple angles and supports various connection methods including single earrings, double earrings, and flanges to accommodate different cylinder layouts
Wear Resistant & Low Maintenance: Composite materials on inner and outer spherical surfaces enable self-lubrication during movement, reducing external lubrication requirements in frequent refueling conditions
Cost Effective: Simple structure and easy installation reduce wearing part quantities and assembly time, lowering overall procurement and maintenance costs

Usage Questions & Answers

Where is this type of bearing used?

Widely used in various mechanical systems requiring strong load-bearing capacity including hydraulic cylinders, mining machinery, mechanical engineering, construction machinery, and production lines.

Why choose hydraulic cylinder bearings over other bearing types?

These bearings feature weldable faces that can be firmly welded, serving as reliable connections between cylinders and structural components.

How to choose an ideal bearing?

Ensure inner diameter (d), outer diameter (D), and thickness (B) match shaft diameter and installation space requirements
Verify earring bore diameter and welding dimensions comply with design drawings to ensure welding strength and positioning accuracy
Select appropriate clearance: Choose larger clearance (C3 clearance) for high-temperature or high-speed working conditions to prevent jamming from thermal expansion

How to install correctly?

Cold Installation (Small Sizes)

Apply uniform force to inner or outer ring using a sleeve and pressing machine
Insert bearing into shaft or bearing seat without directly striking with a hammer
Apply small amount of lubricating oil on contacting surfaces to reduce friction

Hot Installation (Larger Sizes)

Heat bearing to 80-100℃ before inserting onto shaft
Use induction heaters or oil bath heating for even heat distribution
Avoid heating bearings with seals or dust covers above 80℃ to prevent seal material damage

Purchasing Guide

Loading Type and Force: Determine radial load, axial load, or composite load, then estimate maximum force value. For high-impact or heavy-load scenarios (excavators, rollers), recommend self-aligning roller bearings or welded joint bearings with thickened outer rings
Motion Form: Consider swing angle and frequency. Small-angle high-frequency swing suits self-lubricating joint bearings (GK series). Choose sealed radial joint bearings for large-angle low-frequency conditions
Environmental Conditions: Select bearings with double-sided sealing (2RS), surface phosphating, or galvanizing treatment for harsh environments including high temperature, humidity, and dusty areas
Installation Requirements: Accurately measure installation space and shaft diameter according to standard size charts

Tag:

Place of Origin:	China
Brand Name:	SYX
Certification:	ISO/TS 16949:2009
Model Number:	GK..DO

Minimum Order Quantity:	100pcs
Price:	$0.90 - $70.00
Packaging Details:	industrial pack
Delivery Time:	5-8 working days
Payment Terms:	T/T
Supply Ability:	5000pcs per week

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