56-60 HRC CNC Precision Machined Components Turntable Slewing Bearing

Place of Origin CHINA
Brand Name DM
Certification TUV ISO
Model Number DM-062
Minimum Order Quantity 1piece
Price 40-60USD
Packaging Details Seaworth plywood case
Delivery Time 3-4 weeks
Supply Ability 10000piece per month

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Product Details
Type Slewing Bearing, Slewing Ring Bearing Raceway Hardness 56-60HRC
Material GB42CrMo(DIN42CrMo4/BS708A42/AISI4140) Core Hardness 250-300 HB
Bearing Type Four Point Contact Ball Slewing Bearing Application Tunnel Boring Machine
Feature CROSS ROLLER, High Precision, High Load Capacity Gear Options External Gear Only
Product Name Micro External Teeth Slewing Bearing Excavator Turntable Slewing Bearing Ring
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60 HRC CNC Precision Machined Components


56 HRC CNC Precision Machined Components


300 HB turntable slewing bearing

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Product Description
Product Description


Micro External Teeth Slewing Bearing Excavator Turntable Slewing Bearing Ring

Slewing bearings are large-sized bearings which can accommodate a combined load, i.e., radial loads and tilting moment. They are usually provided with holes for fixing bolts; internal, external or no gear; and lubrication holes and seals, which allow a compact and economical arrangement. In addition, they often enable the elimination of many components necessary in the classical bearing arrangement.

56-60 HRC CNC Precision Machined Components Turntable Slewing Bearing 0

Slewing Bearing Details As Below:

Product Name
External Slewing Bearing Ring For for Tunnel Boring Machine(TBM)
Model Number
EGSBM 566 220 121
For Tunnel Boring Machine
Gear Option
External Gear Only
Seal Type
Rubber Sealed
Four Point Contact Ball
Outer diameter:
566 mm (22.28")
Inner diameter:
220 mm (8.66")
121 mm (4.76")
Axial play:
0.00 mm~0.10 mm
Radial play:
0.00 mm~0.10 mm
Core hardness:
250~300 HB
Raceway Hardness:
56 ~ 60 HRC
Raceway Effective depth
≥ 5 mm
GB42CrMo (DIN42CrMo4/BS708A42/AISI4140)
EN 10204 2.2; EN 10204 3.1.B ; EN10204 3.1.C
Heat treatment
Quenching and tempering,
Raceway induction quenching
Operating Temperature
-40°C to +50°C
EP2 lubricating lithium grease
151 KGS
Place of Origin
API Q1 Certificate (American Petroleum Institute) Quality Assured Firm
Qualified to be used in Petroleum machinery equipment.
ISO9001:2008 Certificate
OEM Service, Customized Service, Design Service
Detailed Images


 56-60 HRC CNC Precision Machined Components Turntable Slewing Bearing 1

56-60 HRC CNC Precision Machined Components Turntable Slewing Bearing 2





Company Profile


DRACHMA (ZHANGJIAGANG) MATERIAL CO.LTD has two main production plants. Zhangjiagang plant is responsible for the rough forming of workpieces, mainly forging process; While Hangzhou plant is mainly responsible for precision machining, welding and inspection of products. We implement this layout mainly to use the industrial advantages of each region to achieve maximum economic benefits.


Traditional processing enterprises often do not have such ability, the lack of blank forming ability is unable to achieve the optimal use of materials, resulting in excessive processing allowance, long cycle, high cost. Zhangjiagang is located in the southern jiangsu province, which has the strongest forging capacity in China. It has a good supporting industry and can realize the diversified production of forging and pressing blanks. Thanks to this, the product cycle of our company is faster, the cost performance is higher, and the forging products have better mechanical properties than the products directly processed by rod or plate.


In addition, our company has strong welding ability, which can weld and assemble parts to achieve system delivery. We adopt the mode of automatic robot welding and manual precision welding to achieve flexibility and high quality.


                                         Ultra High Flexible Vacuum Stainless Steel Welded Bellows Pipe Fitting 5


Equipment List




Name Type Quantity Processing range Precision(um)
CNC MAZAK(QTN350L) 1 φ720*1250 3
CNC MAZAK(QTN250L) 1 φ580*1500 3
Turn milling center MAZAK(QTN250M) 2 φ580*600 3
CNC Newway(NL-634SC) 1 φ630*1000 5
CNC FUJI(TN-36) 2 φ350*290 3
CNC HAAS SL30 1 φ620*750 3
CNC MAZAK FJV200 1 560X*410Y*560Z 3
CNC LGMAZAK NEXUS160AN-2PC 1 560X*410Y*660Z 10
CNC WHEELEL 2 560X*410Y*660Z 5
Welding Miller 1    



Material List We Can Deal



Stainless steel :304/1.4307 316/1.4404 321/1.4541 316Ti/1.4571 317L 904L F44 NO6625 UNS718

440A/B/C 431 446 F6a


Carbon Steel:A105, SA350 LF1, LF2, LF3, LF6, A707, A694, 4130, 4140, 8620, 8630, A182F5, F11, F12, F22, F91, F92


Duplex steel : F51 F60 F53 F55


Alloy Steel:4130, 4140, 4142, 4145, 4150, 4320, 4330, 4340, 4350, 4620, 4820, 6150, 8620, 8630, 8822, 9310, 52100, HY80, HY100, 9315, 300M, Nitralloy 135M, 17-22A


Aluminum : 2014, 2024, 2025, 2219, 2618, 3003, 5083, 6061, 7049, 7050, 7075, 7079, 7149, 7150, and 7175