Double row four point contact ball slewing ring bearings Description: 1. Structure: Rings: one piece inner ring and two pieces outer ring, with three linear raceways in outer and inner rings Balls: double-row balls, contacting arc raceway on four points, separated by polyamide spacers Cage/retainer /Spacers: made of polyamide, Aluminum, steel, or brass Seal: integral seals 2. Hardness: Raceway: 50~55 HRC; 55~60 HRC; 60~65 HRC Teeth: 50~55 HRC; 55~60 HRC; 60~65 HRC Balls: 50~55 HRC; 55~60 HRC; 60~65 HRC 3. Load support: The load angles of both upper and lower races are 90 degree. Better dynamic load capacity than single row four point contact ball slewing bearings Can bear large axial force and, radial, and tilting moments 4. Material: 50Mn, 42CrMo 5. Precision: P0. P6. P5. 6. Working conditions: on tower crane, truck crane and other handling machinery, especially suitable for the ones required of medium-sized diameter or larger
Types: Our double row four point contact ball slewing ring bearings include:
1. Double row four point contact ball slewing ring bearings (non-geared) 2. Double row four point contact ball slewing ring bearings (internal gear)
3. Double row four point contact ball slewing ring bearings (external gear) 4. Double row four point contact ball slewing ring bearings (internal gear, gear hardened)
5. Double row four point contact ball slewing ring bearings (external gear, gear hardened) 6. Same diameter double row four point contact ball slewing ring bearings
7. Different double row four point contact ball slewing ring bearings
Application: Double row four point contact ball slewing ring bearings are applied in the Joint parts and rotating parts of robots, revolving table of machinery process center, machinery hand revolving part, medical equipments, crane/ lifting transportation machinery, construction machinery and military products
Packaging Details: Step 1: Covered with the anti-rust oil Step 2: wrapped with the plastic film;
Step 3: Packed with Kraft paper and professional belts;
Step 4: Put into wooden box to avoid the rust or the moist;
Remark: Normally, plastic film+ Kraft +belt+ wooden box, but customized packing available
Our Advantages: 1. High quality and competitive price
2. Trial order accepted
3. ISO certified company
4. OEM and ODM accepted 5. Manufacturing slewing ring bearings since 2000
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