• SUNGIL BK-G Ball Screw Grease-Injection Support Unit (grease injection
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SUNGIL BK-G Ball Screw Grease-Injection Support Unit (grease injection

SUNGIL BK-G Ball Screw Grease-Injection Support Unit (grease injection

Grease-injection version of the BK fixed-side support unit with a grease nipple and passage in the bearing cover, allowing re-lubrication without removal.

Key features

  • Grease nipple for refilling without removal
  • Extends bearing life in vertical or harsh duty
  • Inner oil-seal rings prevent leakage
  • Supplied with lock nut and collars

Specifications

Series BK-G
Position grease injection, fixed side
Shaft d1 17-40 mm
Housing finish Black oxide (standard); RA Raydent option
Precision grade P5 (medium preload), C8 (medium), P0-C7 (light)
Bearing arrangement DF angular contact (standard)
Grease options Standard, LG2 AG, AFE-CA AE, AFF AF, HT-Z1 AH, NBU-15 AN, XL-600 AX
Source SUNGIL Catalogue (EN), Support Unit section
BK-17-G Shaft d1: 17 mm | Screw OD: 25-28 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-17 | Mass: 1,500 g
BK-20-G Shaft d1: 20 mm | Screw OD: 25-28 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-20 | Mass: 1,400 g
BK-25-G Shaft d1: 25 mm | Screw OD: 30-36 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-25 | Mass: 2,600 g
BK-30-G Shaft d1: 30 mm | Screw OD: 40 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-30 | Mass: 3,600 g
BK-35-G Shaft d1: 35 mm | Screw OD: 45 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-35 | Mass: 4,800 g
BK-40-G Shaft d1: 40 mm | Screw OD: 50-55 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-40 | Mass: 7,400 g
Ball Screw Support UnitSUNGIL
6 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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SUNGIL BK-G Ball Screw Grease-Injection Support Unit (grease injection

Brand SUNGIL·Ball Screw Support Unit

Available part numbers (6)

BK-17-G, BK-20-G, BK-25-G, BK-30-G, BK-35-G, BK-40-G

How to order

Send the SUNGIL part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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Product codeSpec
BK-17-GShaft d1: 17 mm | Screw OD: 25-28 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-17 | Mass: 1,500 g
BK-20-GShaft d1: 20 mm | Screw OD: 25-28 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-20 | Mass: 1,400 g
BK-25-GShaft d1: 25 mm | Screw OD: 30-36 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-25 | Mass: 2,600 g
BK-30-GShaft d1: 30 mm | Screw OD: 40 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-30 | Mass: 3,600 g
BK-35-GShaft d1: 35 mm | Screw OD: 45 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-35 | Mass: 4,800 g
BK-40-GShaft d1: 40 mm | Screw OD: 50-55 mm | Grade: P5/C8/P0-C7 | Lock nut: RN-40 | Mass: 7,400 g

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