Kobelco 7035 Idler (Front Idler) for Crawler Crane Undercarriage
Aftermarket Kobelco 7035 front idler (P&H 7035 idler), 35SiMn steel, surface hardness HRC 52–56, internal hardness HRC 36–42. ShunQi Track / PartsCrane is a direct crawler crane front idler supplier— fitment confirmed by machine model, photos, or dimensions before shipment.
Product Specifications
| Machine Model | Kobelco 7035 / P&H 7035 |
|---|---|
| Part Type | Front Idler / Idler |
| Compatible Brand | Kobelco (P&H) |
| Supply Brand | ShunQi Track / PartsCrane |
| Machine Type | Crawler Crane |
| Material | 35SiMn alloy steel |
| Surface Hardness | HRC 52–56 (induction hardened) |
| Internal Hardness | HRC 36–42 |
| Product Group | Crawler Crane Undercarriage Parts |
| Shipment Port | Xiamen / Guangzhou |
| Fitment Check | By machine model, photos, dimensions, sample, or drawing |
About ShunQi Crane Idler
On the 7035, the front idler mounts against the recoil spring assembly — when the chain hits ground obstruction during travel, the idler pushes back into the frame instead of locking up the sprocket. Machines doing short-distance moves on piling sites go through this cycle dozens of times a day; the idler takes the hit every time.
35SiMn holds up under the combination of surface abrasion and body impact that crane idlers take in this weight class. Surface hardness at HRC 52–56 covers chain link wear; core at HRC 36–42 keeps the body from cracking on hard impact. In practice, once the tread wears down to where you can see the color change on the cross-section, wear rate jumps — that is the replacement point. Waiting longer means the chain starts riding on the core material, and the idler goes from months to weeks.
Precautions for Crawler Crane Operation
On piling and foundation work, idler wear on the 7035 runs faster than on a crane sitting stationary on a lift job. Short travel cycles in wet clay pack mud into the recoil spring housing and accelerate shaft wear at the bracket journal. Check the shaft play at both ends when you pull the idler — a worn journal on one side only usually means the bracket seat has shifted.
Structural Drawing
What to Check Before Ordering
Tread outer diameter — measure at the widest point of the tread, not the flange
Overall width — end face to end face including flanges
Shaft diameter — at the bracket mounting journal, both ends
Flange profile — single or double, and whether the chain runs inside or outside the flange
Recoil spring seat condition — if the bracket has been repaired, include a photo
Customization Options
Brand labeling: Available under your own brand for distributor and OEM orders.
Surface color: Coating color adjustable on request.
Custom dimensions: Produced to drawing or physical sample.
Product Video
Other Kobelco Crawler Crane Models — Components Available
ShunQi Track / PartsCrane supplies Kobelco crawler crane undercarriage partsacross the full range — idlers, track rollers, carrier rollers, sprockets, track shoes and track chain. Each part confirmed to the specific model before shipment. The Kobelco 7080 idleris also available — same fitment confirmation process applies.
Kobelco crawler crane models — undercarriage components available:
Frequently Asked Questions
What does the front idler do on a Kobelco 7035 crawler crane?
It guides the track chain at the front of the crawler frame and works with the recoil spring to absorb travel shock. Without it the chain runs directly on the frame rail.
Is the Kobelco 7035 the same machine as the P&H 7035?
Yes. P&H Cranes was acquired by Kobelco. The 7035 runs under both names depending on build date — parts are the same. The machine plate will show one or the other.
How do I know when the 7035 idler needs replacing?
Flat spots or uneven wear across the tread width, chain running off-center, or visible play in the shaft journal at the bracket. A worn shaft journal is often missed — check both ends.
Is this a genuine Kobelco OEM part or aftermarket?
Aftermarket replacement only. Kobelco and P&H model names identify fitment, not origin. Supplied by ShunQi Track / PartsCrane / Quanzhou Shunqi Construction Machinery Parts Co., Ltd.
Can you supply a full set of Kobelco 7035 undercarriage parts?
Yes — front idlers, track rollers, carrier rollers, sprockets, track shoes and track chain. ShunQi Track operates as a direct crawler crane front idler supplier; full sets ship consolidated in one container on request.
Can you produce a custom idler by drawing or sample?
Yes. Send outer diameter, overall width, shaft diameter, tread profile, material grade and quantity. We confirm feasibility, lead time and price.
Trademark notice: Kobelco, P&H, 7035 and related model designations are used solely to identify machine compatibility. Aftermarket replacement parts supplied by ShunQi Track / PartsCrane / Quanzhou Shunqi Construction Machinery Parts Co., Ltd. Not manufactured by or affiliated with Kobelco Cranes Co., Ltd.
Get Price for Kobelco 7035 Idler
Send model, photos of the worn idler, quantity and destination port. ShunQi Track / PartsCrane — crawler crane front idler supplier — replies with fitment confirmation and price within one business day.
Email: sales@sq-parts.comWhatsApp: +86 185 5958 7739
