Detail Information

Bore Diameter:	10-80 Mm	Head Diameter:	9-180 Mm
Ball Width:	20-80 Mm	Thread Size:	7-47 Mm
Tilt Angle:	6-17°	Static Load Rating:	8.15-620 KN
Highlight:	Welding Shank Hydraulic Cylinder Rod End , Spherical Rod End Bearing , Corrosion Resistant Spherical Plain Bearing

Product Description

GK Series Hydraulic Rod Ends

GK..DO series hydraulic rod ends with cylindrical section welding shank, steel/steel construction, requiring maintenance. Rod end with welding shank consists of a rod end housing and a radial spherical plain bearing (GE...E or GE...ES). The rod end housing is manufactured from weldable steel, featuring a dowel pin in the shank bottom and welding chamfer. This design allows for convenient relubrication via a nipple or hole.

Key Features

For shaft diameters from 10 mm to 80 mm
Concentric locating pin on shank base and 45º welding chamfer
Spherical plain bearing located in housing by staking on both sides
Designed for piston rod ends and cylinder bases
Available with maintenance-free spherical plain bearings

Material Specifications

General Purpose Material:

Housing: construction steel S 355 J2G3 (St 52-3 N) (1.0570)
Bearing: GCr15(52100,100Cr6) bearing steel, phosphate treated

Corrosion Resistant Material:

Housing: AIS316 stainless steel
Bearing: AISI420 stainless steel
Liner: PTFE fabric
Shaft diameter: 20~50mm

Technical Specifications

Designation	Bore diameter (d)	Head diameter (d2)	Ball width (B)	Head width (C1)	Tilt angle (α°)	Basic dynamic load rating (C)	Basic static load rating (C0)
GK 15 DO	15	12	40	10	8	17	32
GK 40 FO	40	102	40	27	17	127	208
GK 40 LO	40	92	40	23	7	100	156
GK 25 LO	25	64	25	17	7	48	72
SGK 20 UK-2RS	20	16	53	13	9	30	54
GK 45 DO	45	32	102	27	7	127	208
GK 20 DO	20	16	53	13	9	30	54
GK 17 DO	17	14	46	11	10	21.2	40
GK 12 DO	12	10	34	8	11	10.8	21.6
GK 45 FO	45	112	43	30	15	156	250
GK 35 FO	35	92	35	23	16	100	156
GK 30 FO	30	82	32	21	17	80	125
GK 20 FO	20	64	25	17	17	48	72
GK 60 LO	60	135	60	38	6	245	390
GK 45 LO	45	102	45	27	7	127	208
GK 35 LO	35	82	35	21	6	80	125
GK 20 LO	20	53	20	13	9	30	54
SGK 40 UK-2RS	40	28	92	23	7	100	156
SGK 30 UK-2RS	30	22	73	19	6	62	95
SGK 25 UK-2RS	25	20	64	17	7	48	72
GK 60 DO	60	44	135	38	6	245	390
GK 40 DO	40	28	92	23	7	100	156
GK 35 DO	35	25	82	21	6	80	125
GK 25 DO	25	20	64	17	7	48	72
GK 10 DO	10	9	29	7	12	8.15	15.6
GK 60 FO	60	161	63	42	17	315	510
GK 50 FO	50	137	56	38	17	245	390
GK 25 FO	25	73	28	19	17	62	95
GK 70 LO	70	160	70	42	6	315	510
GK 50 LO	50	112	50	30	6	156	250
GK 30 LO	30	73	30	19	6	62	95
SGK 45 UK-2RS	45	32	102	27	7	127	208
SGK 35 UK-2RS	35	25	82	21	6	80	125
GK 70 FO	70	180	70	47	16	400	620
GK 80 LO	80	180	80	47	6	400	620
SGK 50 UK-2RS	50	35	112	30	6	156	250
GK 70 DO	70	49	160	42	6	315	510
GK 50 DO	50	35	112	30	6	156	250
GK 30 DO	30	22	73	19	6	62	95
GK 80 DO	80	55	180	47	6	400	620

Usage Instructions

1. Safety & Preparation

Wear appropriate PPE (safety glasses, gloves, welding helmet)
Clean all parts thoroughly before installation
Ensure bearing moves freely without obstruction
Identify the dowel pin on shank bottom
Drill matching hole in mounting plate for pin alignment

2. Welding Procedure

Use standard arc welding (MIG/TIG recommended)

Critical: Prevent bearing heat damage during welding

Use a heat sink near the bearing area
Weld in short, staggered segments and allow cooling between passes
Avoid continuous welding around the circumference

Fill the welding chamfer completely for optimal strength

3. Post-Weld Procedures

Allow to cool naturally - do not quench
Inspect weld quality and integrity
Verify bearing still moves freely without binding
Relubricate immediately (for types with nipple/hole)
Install linkage bolt through bearing inner ring and secure properly

Buyer's Guide

Choose the Correct Series

GE...E / GE...ES: General industrial linkages
- E: Steel-on-steel, requires relubrication. Higher load capacity
- ES: Coated surface, often maintenance-free operation
GK Series: Use specifically for hydraulic cylinder connections
- Heavy-duty construction for high shock loads
- Enhanced seals for harsh industrial environments

Key Specifications to Verify

Size compatibility (bolt bore, housing diameter)
Static Load Rating (C0) - Most critical parameter for welded ends
Angular misalignment capability
Shank dimensions and chamfer specifications

Material & Environmental Considerations

Housing/shank material: Weldable steel construction
Seal type (standard rubber or specialty materials)
Lubrication temperature operating range

Selection Checklist

✓ Request technical datasheets with complete load ratings

✓ For hydraulic applications, specify GK series

✓ Confirm warranty coverage and installation requirements

✓ Verify material compatibility with operating environment

✓ Ensure proper sizing for intended application

Tag:

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

Minimum Order Quantity:	100 PCS
Packaging Details:	wooden pallet
Delivery Time:	30 working days
Payment Terms:	T/T,L/C,Western Union

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