Bicycle Angular Contact Ball Bearing K4052H7-45/45-2RS Sealed cartridge Headset for bike

• Customization: Available
• Contact Angle: 45°
• Aligning: Aligning Bearing
• Model NO.: K4052H7
• Separated: Unseparated
• Rows Number: Single
• Load Direction: Radial Bearing
• Material: Bearing Steel
• Sealing: 2RS (Double Rubber Sealed)
• Series: Deep Groove Ball Bearing
• Bearing Type: Deep Groove Ball Bearing
• Ball Material: Chrome Steel (GCr15)
• Ring Material: Bearing Steel (SUJ2 / GCr15)
• Cage Type: Steel Stamped Cage
• Grease Type: Lithium-based Grease
• ABEC Rating: ABEC-3 (Precision Class)
• Operating Temperature Range: -20°C ~ +120°C
• Water & Dust Resistance: Good (2RS Sealed)
• Application1: Pulleys, Headset
• Installation Method: Press-fit
• Certificate: ISO 9001 & TS 16949 & RoHS
• Quality Control: APQP SPC MSA FMEA
• Transport Package: Industrial Package / Color Box
• Specification: 40x52x7mm
• Trademark: Follow Customer's requested
• Origin: China
• HS Code: 8482200000
• Production Capacity: 800000 Pieces / Year
• Package Size: 5.40cm * 5.40cm * 1.70cm
• Package Gross Weight: 0.170kg

Product Description

 GIL III Bike Bearing

K4052H7-45/45-2RS bicycle bearing is a high-performance sealed ball bearing, with dimensions 40x52x7mm. It is widely used in bicycle hubs and bottom brackets. Featuring double rubber seals (2RS), it effectively protects against dust, dirt, and moisture, ensuring long service life and smooth rotation. Available in chrome steel or stainless steel, this bearing is suitable for both OEM and aftermarket needs. Custom packaging and laser marking available upon request.

Applications:
- Bicycle hubs
- Bottom brackets
- DIY bike repair or replacemen

Bullet points:

• High precision sealed ball bearing (ABEC-5/ABEC-7)

• Suitable for bicycle bottom bracket and hubs

• Double rubber seals for dust and water resistance

• Low friction, durable performance

• Available in stainless or chrome steel

Product Parameters

 

Bearing No	Overall Dimension					Load Rating(N)		Steel Ball
	d	D	B	a	β	Cr	Cor	Quantity	Dimension
ACB2738H6.5-36/45-2RS	27.15	38.0	6.5	36°	45°	4090	3120	20	3.175
ACB2738H6.3-45/45-2RS	27.20	38.0	6.3	45°	45°	4090	3120	20	3.175
ACB3039H6.5-45/45-2RS	30.15	39.0	6.5	45°	45°	3500	3050	26	2.778
ACB3041H6.5-36/45-2RS	30.15	41.0	6.5	36°	45°	4450	3850	25	3.175
ACB3041H6.5-45/45-2RS	30.15	41.0	6.5	45°	45°	4450	3850	25	3.175
ACB3041H6.3-45/45-2RS	30.20	41.0	6.3	45°	45°	4450	3850	25	3.175
ACB30418H6.3-45/45-2RS	30.20	41.8	6.3	45°	45°	4450	3850	25	3.175
ACB30418H6.5-45/45-2RS	30.15	41.8	6.5	45°	45°	4450	3850	25	3.175
ACB30418H7-45/45-RS	30.15	41.8	7.0	45°	45°	4450	3850	25	3.175
ACB30418H7-36/45-RS	30.15	41.8	7.0	36°	45°	4450	3850	25	3.175
ACB30418H7-45/45-2RS	30.20	41.8	7.0	45°	45°	4440	3840	25	3.175
ACB30418H8-45/45-RS	30.50	41.8	8.0	45°	45°	4440	3840	25	3.175
ACB30418H8F-45/45-RS	30.50	41.8	8.0	45°	45°	4440	3840	25	3.175
ACB3042H7-36/45-2RS	30.05	42.0	7.0	36°	45°	4440	3840	25	3.175
ACB33438H7-30/45-2RS	33.05	43.8	7.0	30°	45°	4140	3520	23	3.175
ACB34468H7-45/45-2RS	34.10	46.8	7.0	45°	45°	4740	4290	28	3.175
ACB34469H7-45/45-2RS	34.10	46.9	7.0	45°	45°	4740	4290	28	3.175
ACB3547H7-36/45-2RS	35.0	47.0	7.0	36°	45°	4720	4290	28	3.175
ACB3749H7-45/45-2RS	37.0	49.0	7.0	45°	45°	4940	4580	30	3.175
ACB40518H8-36/45-RS	40.0	51.8	8.0	36°	45°	4820	4550	30	3.175
ACB4052H6.5-36/45-2RS	40.0	52.0	6.5	36°	45°	4820	4550	30	3.175
K4052H7-45/45-2RS	40.0	52.0	7.0	45°	45°	4820	4550	30	3.175
K4052H8-45/45-2RS	40.0	52.0	8.0	45°	45°	4820	4550	30	3.175

 

CATALOG FOR HEADSET BEARINGS
Bearing No.	Bore(d)(mm)	Outer(D)(mm)	Width(B)(mm)	Angle(Cl)	Angle(C2)	Weight(g)
ACB2738H6.5-36/45	27.15	38	6.5	36°	45°	18.2
ACB2738H6.3-45/45	27.15	38	6.3	45°	45°	19
ACB3044H8-45/45	30.05	44	8	45°	45°	31.5
ACB3039H6.5-45/45	30.15	39	6.5	45°	45°	16
ACB3041H6.3-45/45	30.15	41	6.3	45°	4S°	19
ACB3041H6.S-45/45	30.15	41	6.5	45°	4S°	19
ACB304H6.5-36/45	30.15	41	6.5	36°	45°	19.6
ACB3041H7-45/45	30.15	41	7	45°	4S°	20
ACB3041H7.7-36/45	30.15	41	7.7	36°	45°	21.4
ACB30415H6.5-36/36	30.15	42	6.5	36°	36°	20
ACB30418H8-45/45	30.15	42	8	45°	45°	21
ACB30418H6.5-45/45	30.15	42	6.5	45°	4S°	22
ACB30418H7-45/45	30.15	42	7	45°	4S°	22.6
ACB30418H6.3-45/45	30.15	42	6.3	45°	45°	23
ACB30418H7-36/45	30.15	42	7	36°	45°	23.5
ACB3042H7-36/36	30.15	42	7	36°	36°
ACB3042H7-36/45	30.15	42	7	36°	45°
ACB302418H6.3-45/45	30.2	42	6.3	45°	4S°	21
ACB30243H7.2-45/45	30.2	43	7.2	45°	4S°	23.2
ACB302447H7-45/45	30.2	45	7	45°	45°	32
ACB302448H7.9-45/45	30.2	45	7.9	45°	45°	33.4
ACB305418H.7-45/45	30.5	42	7.7	45°	45°	22
ACB305418H8-45/45	30.5	42	8	45°	45°	23
ACB305418H6.3-45/45	30.5	42	6.3	45°	45°
ACB307418H7.7-45/45	30.7	42	7.7	45°	45°
ACB3144H6.3-45/45	31.4	44	6.3	45°	45°	30
ACB31448H6.3-45/45	31.4	45	6.3	45°	45°	32.6
ACB32438H7-45/45	32.4	43.8	7	45°	45°	23
ACB32418H6-45/45	32.8	41.8	6	4S°	45°	16
ACB3344H6-36/45	33	44	6	36°	45°	21
ACB33438H7-30/45	33.05	43.8	7	30°	45°	23.8
ACB334SH7-45/45	33.5	45	7	45°	45°	26.2
ACB3446H7-45/45	34.1	46	7	4S°	4S°	25
ACB34468H7-45/45	34.1	46.8	7	45°	45°	27.7
ACB34469H7-45/45	34.1	46.9	7	45°	45°
ACB3544H5-90/90	35	44	5	90°	90°	16
ACB3544H5.5-36/45	35	44	5.5	36°	4S°	32
ACB354535H7.3-45/45	35	45.35	7.3	45°	45°	22.3
ACB3547H8-45/45	35	47	8	45°	45°	29.9
ACB36458H6.5-45/45	36.8	45.8	6.5	45°	45°	18.9
ACB3748H7-45/45	37	48	7	45°	45°	27
ACB37489H6.5-36/45	37	48.9	6.5	36°	45°	25.9
ACB3749H6.5-36/45	37	49	6.5	36°	45°	25.25
ACB3749H7-36/45	37	49	7	36°	45°	28.1
ACB3749H7-45/45	37	49	7	45°	45°	28.8
ACB40508H7-45/90	40	50.8	7	4S°	90°	26.8
ACB4051H6.5-36/36	40	51	6.5	36°	36°	24.8
ACB4051H8-36/45	40	51	8	36°	45°	29.3
ACB4051H7-45/45	40	51	7	4S°	45°
ACB4051SH7-4S/45	40	51.5	7	45°	45°
ACB40518H7-45/45	40	51.8	7	45°	45°	30.8
ACB40518H8-36/45	40	51.8	8	36°	45°	32.6
ACB40518H7.5-36/45	40	51.8	7.5	36°	45°	33
ACB40518H8-45/45	40	51.8	8	45°	45°	33.1
ACB40518H8-90/90	40	51.8	8	90°	90°
ACB40519H7-45/45	40	51.9	7	45°	45°	29.6
ACB40519H8-45/45	40	51.9	8	45°	45°	32.6
ACB4052H6.5-36/45	40	52	6.5	36°	45°	29.2
ACB4052H7-90/90	40	52	7	90°	90°	30.9
ACB4052H7-45/45	40	52	7	45°	45°	31.5
ACB4052H7-36/45	40	52	7	36°	45°	31.8
ACB4052H7.5-45/45	40	52	7.5	45°	45°	34.2
ACB4052H8-45/45	40	52	8	45°	45°	36
ACB40495H6.5-45/45	40.5	49.5	6.5	45°	45°	21.4
ACB4660H8-45/45	46	60	8	45°	45°
ACB50619H8-36/45	50	61.9	8	36°	45°

 

We strictly follow the core of quality management process control:
> APQP: Product quality advanced planning
> SPC: Statistical process control
> MSA: Measurement system analysis
> FMEA: Analysis of potential failure modes and consequences
> PPAP: Production part approval procedure

 

Clean production environment & Advanced bearing process equipment
  

 

Bearing type	Ball bearing	Material	Ceramic / stainless steel / bearing steel / carbon steel
Cage material	iron/nylon/Brass	Rolling element material	steel ball /bearing steel /stainless steel/ glass ceramic
Seal material	Iron/rubber/natural rubber	Material of rolling element	steel ball / bearing steel / stainless steel / glass / ceramic

Packaging & Shipping

 

Company Profile

Our Business involves various industry applications for the standard and special industrial parts, auto parts, engineering machinery parts, our main task and goal is to provide by the factory production the kinds of perfect bearing products, transmission and spare parts, the development of cooperative relationship with customers and to provide customers a variety of services as required.

 

Our Advantages

1. We have the most advanced bearing process equipments, CNC automatic facilities and testing instruments.
2. We manufacturing ball bearings and mounted bearing units, also provide a strong full range products, including electric motor and components One-stop partnerships products from our audited supply-chain.
3. All produtcs are manufactured exclusively by companies with ISO 9001:2008 certified Quality System which use state-of-the-art machines.The quality path starts from begining to deliver and goods' quality trackable

After Sales Service

1. Optimize customer inventory and reduce cost
2. Provide maintenance solutions

FAQ

1. Can you make custom orders?
A: Yes, the customized LOGO or drawing is acceptable for us.


2. How many samples can you provide? Are the samples free?
A: a). Samples quantity: 1-20 pcs are available.
     b) . Free samples: It depends on the model NO., material and quantity. Some of the bearings samples need client to pay   samples charge and shipping cost.
     c).  It's better to start your order with Trade Assurance to get full protection for your samples order.


3. How do I select different accuracy levels for the bearing?

A:

P0/ABEC-1/JIS0 OR P6/ABEC-3/JIS6	Computer printers, copy machine-feed rollers, micro motors, stepping motors, fan motors, VCR pinch rollers
P5/ABEC-5/JIS5 OR P4/ABEC-7/JIS4	High precision motors, hard disk drive motors, dental spindles, servo motors, encoders, VCR drum spindles, VCR capstan motors, polygonal mirror scanner motors
P4/ABEC-7/JIS4	High frequency spindles, gyro motors, gyro gimbals